Happy Grey Mouse: Proper Care for a Domestic Pet

Understanding Your Happy Grey Mouse

The Charm of the Domestic Grey Mouse

Temperament and Behavior

The domestic grey mouse exhibits a calm yet inquisitive temperament. Individuals are typically shy around unfamiliar people but become relaxed once they recognize a consistent caretaker. Their natural alertness drives frequent exploration of the enclosure, especially during twilight periods when activity peaks.

Key behavioral traits include:

Territorial marking: Small urine spots along cage walls signal ownership; regular cleaning prevents odor buildup.
Social interaction: Mice form hierarchical groups; introducing new companions requires gradual acclimation to avoid aggression.
Foraging instinct: Preference for scattering food encourages natural searching behavior; providing chewable objects satisfies dental needs.
Escape tendency: Strong drive to flee through any opening; secure lids and sealed gaps eliminate hazards.

Understanding these patterns enables owners to create environments that align with the mouse’s innate preferences, reducing stress and promoting healthy activity levels.

Life Expectancy

Grey pet mice typically live between two and three years when provided with optimal conditions. The average lifespan may extend to four years for individuals that receive consistent veterinary oversight, balanced nutrition, and a low‑stress environment.

Key factors influencing longevity include:

Genetic background and breed characteristics.
Quality of diet, emphasizing protein‑rich pellets supplemented with fresh vegetables.
Housing conditions: spacious cage, regular cleaning, and adequate enrichment to prevent boredom.
Health management: routine health checks, prompt treatment of respiratory or dental issues, and preventive parasite control.
Environmental stability: stable temperature (18‑24 °C), minimal drafts, and avoidance of toxic substances.

Owners who maintain these standards can expect their grey domestic mouse to reach the upper range of the typical lifespan, maximizing the animal’s health and vitality.

Creating an Ideal Habitat

Cage Selection and Setup

Size and Material Considerations

When selecting a habitat for a domestic grey mouse, size and material directly affect health, behavior, and longevity.

A cage must allow unrestricted movement. Minimum dimensions of 30 cm × 30 cm × 30 cm provide space for climbing, nesting, and exercise. Larger enclosures reduce stress and support natural foraging patterns. Wire flooring should be avoided; solid or fine-mesh bases prevent foot injuries.

Material choices for bedding, accessories, and enclosure components influence hygiene and comfort.

Bedding: Use absorbent, dust‑free substrates such as shredded paper or aspen shavings. Avoid pine or cedar, which release aromatic oils harmful to respiratory systems.
Cage walls: Stainless steel or powder‑coated metal resists corrosion and is easy to sanitize. Acrylic panels permit visual monitoring but require regular cleaning to prevent scratches that harbor bacteria.
Enrichment items: Natural wood blocks, untreated cardboard tunnels, and chewable hemp ropes supply safe gnawing surfaces. Plastic toys must be non‑toxic and free of sharp edges.
Feeding equipment: Ceramic or stainless‑steel dishes resist corrosion and are dishwasher safe, minimizing pathogen buildup.

Regular inspection of all materials ensures wear does not compromise safety. Replace bedding weekly, rotate enrichment items, and clean cage components with mild, unscented disinfectants. Proper attention to size and material standards creates an environment where a grey mouse can thrive.

Bedding Choices: Safe and Absorbent

Choosing appropriate bedding is a fundamental aspect of maintaining a healthy environment for a domestic grey mouse. The material must provide comfort, moisture control, and safety without introducing harmful substances.

Key characteristics of suitable bedding

Low dust production – minimizes respiratory irritation and reduces the risk of infections.
High absorbency – quickly wicks away urine and moisture, preventing mold growth and unpleasant odors.
Non‑toxic composition – free from pesticides, dyes, or synthetic fragrances that could be ingested or inhaled.
Soft texture – allows the mouse to burrow and nest without causing skin abrasions.

Recommended bedding options

Paper‑based products (e.g., shredded paper, cellulose pellets). They meet all safety criteria, offer excellent absorbency, and generate minimal dust.
Aspen shavings – natural wood without aromatic oils found in pine or cedar; provides a pleasant nesting medium while remaining low in dust.
Fleece blankets – reusable fabric that can be washed regularly; offers softness and durability, though supplemental absorbent layers may be needed.

Maintenance considerations

Replace soiled bedding at least twice weekly to preserve hygiene.
Clean the enclosure with a mild, unscented detergent and rinse thoroughly before adding fresh material.
Monitor the mouse for signs of respiratory distress or skin irritation after introducing a new bedding type; adjust selection if adverse reactions appear.

By adhering to these guidelines, owners ensure a safe, dry, and comfortable habitat that supports the wellbeing of a pet grey mouse.

Enrichment: Toys and Hiding Spots

Enrichment for a domestic grey mouse centers on stimulating play objects and secure refuge areas. Proper selection and arrangement of these elements promote natural foraging, exploration, and stress reduction.

Toys
• Chewable wooden blocks, untreated pine or bamboo, satisfy gnawing instincts while protecting teeth.
• Plastic tunnels with multiple openings create a three‑dimensional maze; choose models without sharp edges or detachable parts.
• Puzzle feeders made of sturdy acrylic deliver small seed portions, encouraging problem‑solving and slowing consumption.
• Swings or hanging ropes fashioned from natural fiber rope add vertical movement; anchor securely to cage bars to prevent collapse.

Rotate toys every two to three weeks to sustain interest and prevent habituation. Clean all items with warm water and mild detergent; rinse thoroughly before reuse.

Hiding Spots
• Small ceramic houses with entrance holes replicate burrow entrances; provide a solid interior that retains heat.
• Bundles of shredded paper or untreated corncob bedding formed into compact nests offer privacy and scent familiarity.
• Clay pots turned upside down create a dark cavity; ensure the rim is smooth to avoid injury.
• Sections of natural log split lengthwise deliver a rugged shelter that also serves as a chewing surface.

Place hideaways at varying heights and locations within the enclosure to mimic natural terrain. Maintain cleanliness by replacing soiled materials weekly and inspecting for wear that could cause splinters.

Combining diverse toys with multiple concealed refuges creates an environment where a grey mouse can exhibit instinctual behaviors, maintain physical health, and experience mental stimulation.

Diet and Nutrition

Staple Food Options

A grey mouse kept as a pet requires a consistent diet that supplies protein, carbohydrates, fats, vitamins, and minerals. The foundation of the diet should consist of commercially formulated mouse pellets, which are nutritionally balanced and designed for small rodents. Pellets provide reliable protein levels and essential micronutrients, reducing the risk of deficiencies.

Fresh vegetables can be offered daily in small quantities. Suitable choices include carrots, broccoli, spinach, and kale. These foods contribute fiber and vitamins, supporting digestive health. Fruit should be limited to occasional servings because of high sugar content; appropriate options are apple slices (without seeds), blueberries, and small pieces of banana.

Protein enrichment is achievable with occasional animal‑based items. Boiled egg whites, cooked chicken breast, and live or dried insects such as mealworms or crickets supply high‑quality amino acids. These should not exceed 10 % of the total daily intake to prevent excess fat accumulation.

Commercial mouse treats can be used sparingly for enrichment. They add variety and mental stimulation but must be low in sugar and free from artificial colors. A typical recommendation is one or two treats per week.

Calcium supplementation is critical for bone development and dental health. A small amount of cuttlebone or a calcium powder mixed into the food can meet this need. Ensure water is always fresh and accessible; replace it daily to prevent contamination.

Avoid toxic foods entirely. Chocolate, caffeine, avocado, onions, garlic, and citrus peels are harmful and can cause severe health issues. Regularly monitor the mouse’s weight and coat condition to adjust portions and food types as needed.

Safe Treats and Supplements

Choosing treats that pose no health risk is essential for a pet grey mouse. Commercial mouse treats formulated with low‑fat, grain‑free ingredients provide a reliable option; verify that the label lists only natural components such as dried insects, seed mixes, or small fruit pieces. Homemade treats should consist of finely chopped vegetables (e.g., carrot, cucumber) or a thin layer of unsweetened applesauce, baked until dry to prevent mold growth. All treats must be offered in modest portions—no more than 5 % of the animal’s daily caloric intake—to avoid obesity.

Supplements address specific nutritional gaps. Calcium carbonate powder, measured at 0.1 g per 30 g of food, supports bone development and prevents dental overgrowth. A vitamin D3 supplement, administered at 0.02 IU per gram of body weight, maintains calcium metabolism; excess dosage can cause toxicity, so strict adherence to the recommended amount is mandatory. Probiotic blends containing Lactobacillus spp. improve gut flora; a 0.5 ml dose mixed into water twice weekly is sufficient for most adult mice.

Storage guidelines preserve safety. Keep treats in airtight containers at 4–8 °C, discarding any that develop discoloration or odor. Supplements should remain in a cool, dry place, sealed tightly after each use. Periodically inspect expiration dates and replace items promptly.

Veterinary oversight guarantees appropriate selection. A qualified small‑animal practitioner can confirm that a chosen treat aligns with the mouse’s age, weight, and health status, and can adjust supplement dosages based on blood‑work results. Regular check‑ups, conducted at least biannually, enable early detection of dietary‑related issues.

Water Provision

Fresh water is a non‑negotiable requirement for a domesticated grey mouse. The animal should have access to clean water at all times; the supply must be refreshed at least once daily to prevent bacterial growth and mineral buildup.

Select a water container that discourages contamination. Preferred options include:

Small stainless‑steel or glass bottles with narrow spouts that limit spillages.
Plastic dispensers made of BPA‑free material, equipped with a secure lid.
Ceramic dishes with smooth interiors that are easy to clean.

Maintain the container by washing it with mild detergent and rinsing thoroughly before each refill. Avoid abrasive cleaners that may leave residues.

Monitor intake to detect health issues. A mouse typically drinks 5–7 ml of water per 10 g of body weight each day. Reduced consumption may indicate illness, dehydration, or stress. Observe the water level regularly; a sudden drop without corresponding activity warrants immediate veterinary consultation.

Water temperature influences consumption. Room‑temperature water (approximately 20–22 °C) encourages regular drinking. Cold water can deter intake, while excessively warm water promotes bacterial proliferation.

Implementing these practices ensures reliable hydration, supports metabolic functions, and contributes to the overall well‑being of a pet grey mouse.

Health and Well-being

Common Health Issues

Recognizing Signs of Illness

A grey mouse kept as a pet may conceal health problems behind subtle changes. Early detection relies on observing behavior, appearance, and physiological cues.

Typical indicators of illness include:

Reduced activity or reluctance to explore familiar areas.
Loss of appetite or refusal to eat familiar foods.
Excessive grooming that results in hair loss or skin irritation.
Discharge from the eyes, nose, or ears, often accompanied by swelling.
Abnormal stool: diarrhea, blood, or a marked change in consistency.
Labored breathing, wheezing, or audible rattling sounds.
Unusual posture, such as hunching, trembling, or difficulty maintaining balance.
Sudden weight loss or a noticeable bulge in the abdomen.

Physical examination should focus on temperature, coat condition, and the presence of parasites. A mouse’s body temperature normally ranges between 36‑38 °C; a drop may signal shock or infection. The coat should be smooth and evenly colored; patches of dullness or dandruff suggest skin issues.

When any of these signs appear, isolate the animal to prevent stress to cage mates, provide a quiet environment, and arrange veterinary consultation within 24 hours. Prompt treatment improves outcomes and reduces the risk of complications.

Prevention Strategies

Effective prevention for a domestic grey mouse involves three core areas: health monitoring, environmental management, and behavioral control.

Conduct weekly weight checks and examine fur, eyes, and nasal passages for signs of infection or parasites. Prompt veterinary consultation at the first indication of illness reduces the risk of disease spread.
Maintain a cage temperature between 18 °C and 24 °C, provide a minimum of 10 inches of solid flooring per mouse, and replace bedding weekly. Regular cleaning eliminates bacterial buildup and prevents respiratory problems.
Offer a balanced diet composed of high‑quality rodent pellets, fresh vegetables, and limited seeds. Avoid sugary treats that can trigger obesity and dental issues.
Limit exposure to household chemicals, strong fragrances, and open windows without screens. Secure the enclosure to prevent escapes and contact with predators.
Implement a structured enrichment schedule: rotate chew toys, tunnels, and climbing structures every few days. Consistent mental stimulation reduces stress‑related behaviors such as excessive grooming or aggression.

Adhering to these measures minimizes health threats, ensures a stable living environment, and supports the mouse’s long‑term wellbeing.

Grooming and Hygiene

Self-Grooming Habits

Grey mice rely on self‑grooming to maintain coat condition, skin health, and sensory function. Regular licking removes debris, distributes natural oils, and stimulates circulation. A mouse that grooms efficiently will exhibit a smooth, matte fur without clumps, and its whiskers will remain clean and upright.

Typical grooming behaviors include:

Short, rapid strokes with the forepaws across the back and sides.
Repeated nibbling of the face and ears to clear food particles.
Periodic inspection of the tail, using the mouth to straighten any tangled hairs.

Healthy grooming patterns are continuous but not obsessive; sessions last a few seconds and occur several times per hour. Signs of adequate self‑maintenance:

Even coat texture across the body.
Absence of bald patches or over‑groomed areas.
No excessive saliva stains on bedding or cage walls.
Active, alert demeanor after grooming bouts.

When grooming declines, potential issues arise. Poor coat condition may indicate stress, illness, or dental problems that impede the mouse’s ability to reach certain spots. Monitor for reduced licking frequency, visible skin irritation, or accumulation of debris. Early detection allows prompt veterinary assessment and adjustment of environmental factors such as humidity, cage cleanliness, and enrichment items that encourage natural movement.

Owners can support self‑grooming by providing a dust‑free substrate, regular cage cleaning, and safe chew toys that promote oral activity. Maintaining a stable temperature (20‑24 °C) and low humidity reduces skin dryness, facilitating effective grooming. Proper nutrition, rich in protein and essential fatty acids, supplies the nutrients required for healthy fur and skin regeneration.

In summary, self‑grooming is a central component of a grey mouse’s well‑being. Observing grooming frequency, coat condition, and behavior provides reliable indicators of health, while a clean environment and balanced diet reinforce the animal’s innate cleaning mechanisms.

Cage Cleaning Schedule

Regular cleaning of a grey mouse’s enclosure prevents disease, controls odor, and supports normal behavior. A disciplined routine minimizes stress and extends the pet’s lifespan.

Daily: Spot‑remove feces and food debris; replace soiled bedding in high‑traffic zones; refresh water bottle and check food dispenser for spoilage.
Weekly: Empty all bedding; wash the cage interior with warm water and a mild, non‑toxic detergent; rinse thoroughly; dry completely before adding fresh, dust‑free substrate. Clean feeding dishes, water bottle, and any toys with the same solution.
Monthly: Disinfect the entire cage using a veterinary‑approved sanitizer; inspect all structural components for wear, rust, or loose joints; replace any damaged parts. Perform a deep cleaning of any removable accessories, such as tunnels or climbing platforms, following the same protocol as weekly cleaning.

Adhering to this schedule ensures a sanitary environment, reduces the risk of respiratory and gastrointestinal issues, and promotes a content, active mouse.

Handling and Socialization

Building Trust

Gentle Handling Techniques

Gentle handling protects a grey pet mouse from stress and injury while fostering trust. Begin each interaction by allowing the mouse to sniff your hand; this reduces fear and signals safety. Use a flat, open palm rather than a fist, and keep fingers together to prevent accidental pinching. When lifting, support the animal’s hindquarters with one hand and its chest with the other, maintaining a steady, low‑centered grip that mimics natural movement.

Approach slowly, avoiding sudden gestures.
Place a hand near the cage opening, allow the mouse to voluntarily step onto the palm.
Support the body fully before raising; keep the mouse close to the surface to minimize height.
Hold for no longer than necessary; release onto a secure, familiar area promptly.
Observe the mouse’s posture: tense muscles or rapid breathing indicate discomfort, requiring immediate release.

During routine tasks such as health checks or enclosure cleaning, use a soft, clean cloth to gently coax the mouse onto a safe platform. Avoid squeezing or restraining the neck; instead, use a small, transparent container with ventilation holes to temporarily contain the animal if needed. Consistent, calm handling reinforces habituation, enabling easier administration of medication and more reliable observation of behavior.

Training sessions should be brief, no more than a few minutes, and end on a positive note when the mouse exhibits relaxed posture. Reward calm behavior with a preferred treat placed near the hand to associate handling with a pleasant outcome. Over time, the mouse will exhibit reduced stress responses, facilitating comprehensive care without compromising welfare.

Gradual Introduction to Interaction

A measured approach to handling a domestic grey mouse prevents fear and promotes trust. Sudden contact often triggers defensive behavior, reducing the likelihood of a calm, sociable pet.

Begin with visual exposure: place the cage near a quiet area where the owner spends time, allowing the mouse to observe without direct touch.
Introduce hand scent: lightly rub a clean cloth on the mouse’s enclosure, then handle the cloth for several minutes daily to familiarize the animal with the owner’s odor.
Offer treats from a fingertip: use small pieces of fresh fruit or seed mix, held just outside the cage, to associate the hand with positive reinforcement.
Progress to brief cage openings: open the top for a few seconds, letting the mouse explore the rim voluntarily.
Initiate gentle scooping: use a shallow cup or a soft brush to coax the mouse onto the hand, supporting its body fully.
Extend handling time: increase each session by 10‑15 seconds, monitoring the mouse’s response.

Stress indicators include rapid breathing, excessive grooming, freezing, or attempts to escape. When any sign appears, pause the session, return the mouse to its shelter, and resume after a 24‑hour interval.

A practical schedule starts with two-minute visual exposure daily, advancing to five‑minute handling sessions within two weeks, provided stress signs remain absent. Consistency and patience yield a mouse that tolerates, and eventually enjoys, human interaction.

Social Needs

Companionship: Single vs. Multiple Mice

When a grey mouse is kept as a pet, the decision to house it alone or with conspecifics directly affects its well‑being. Social rodents experience reduced stress, increased activity, and more natural grooming behaviors when paired with one or more companions. However, a solitary mouse eliminates the risk of hierarchical aggression, limits the spread of parasites, and simplifies enclosure management.

Key considerations for single housing:

Easier monitoring of health indicators such as weight, coat condition, and bowel movements.
No dominant‑subordinate conflicts that can lead to injuries or chronic stress.
Lower sanitation demands; litter changes and cleaning occur less frequently.

Key considerations for group housing:

Enhanced mental stimulation through social interaction, which mitigates stereotypic behaviors.
Opportunities for cooperative nesting, leading to better thermoregulation and comfort.
Natural social cues promote proper development of communication patterns and scent marking.

Practical guidelines:

If opting for a pair or small group, select individuals of similar age and temperament to minimize dominance disputes.
Provide a spacious cage with multiple enrichment zones, separate feeding stations, and ample hiding places to allow subordinates to retreat.
Conduct regular health checks on all occupants; isolate any mouse showing signs of illness promptly.
Maintain a strict cleaning schedule, replacing soiled bedding daily and disinfecting accessories weekly.

In summary, multiple mice deliver richer social experiences but require vigilant management of hierarchy, hygiene, and health. A single mouse offers simplicity and precise health oversight but may suffer from loneliness if environmental enrichment is insufficient. Owners should weigh these factors against available space, time, and resources to determine the optimal companionship model for their grey mouse.

Enrichment Through Interaction

Interaction provides essential mental and physical stimulation for a domesticated grey mouse. Regular, varied contact prevents boredom, reduces stress, and encourages natural foraging and exploratory behaviors. A balanced routine combines short, daily sessions with longer, less frequent activities to maintain engagement without causing fatigue.

Practical methods for enrichment through interaction include:

Hand‑feeding small portions of fresh vegetables or grains, allowing the mouse to grasp food directly from the caregiver’s fingers.
Introducing puzzle toys that require manipulation to release treats, fostering problem‑solving skills.
Gentle shaping exercises, such as guiding the mouse through a tunnel or onto a low platform, to develop confidence in navigating the environment.
Scheduled play periods with safe, chew‑resistant objects (e.g., untreated wooden blocks) that the mouse can explore under supervision.
Vocal or soft‑tone communication during handling, which can reinforce trust and habituate the animal to human presence.

Consistent implementation of these practices supports cognitive development, promotes muscular health, and strengthens the bond between owner and pet, resulting in a more content and resilient grey mouse.

Advanced Care Considerations

Breeding Your Grey Mouse (Optional)

Ethical Considerations

Owners who keep a grey mouse as a pet must evaluate the moral implications of captivity, health management, and environmental impact. The animal’s natural behaviors, social needs, and lifespan require deliberate planning to avoid suffering and neglect.

Key ethical considerations include:

Providing enrichment that mimics foraging, climbing, and nesting to prevent boredom and stress.
Ensuring group housing for social species, unless solitary housing is justified by health or temperament.
Sourcing the mouse from reputable breeders or rescues that prioritize humane treatment and avoid wild capture.
Implementing a health regime that includes regular veterinary checks, parasite control, and prompt treatment of illness.
Disposing of waste, bedding, and deceased animals responsibly to prevent environmental contamination and disease spread.

Compliance with local animal welfare regulations, transparent record‑keeping, and readiness to rehome the mouse if circumstances change reinforce responsible stewardship.

Reproductive Cycles

Grey mice reach sexual maturity between five and eight weeks of age. The estrous cycle lasts approximately four to five days and repeats without interruption unless pregnancy occurs. Each cycle comprises four stages: proestrus, estrus, metestrus, and diestrus.

Proestrus (≈12 hours): Hormone levels rise; the female may show slight swelling of the genital area.
Estrus (≈12 hours): The mouse is receptive to males; a clear, mucus‑like discharge appears, and the animal may exhibit increased activity.
Metestrus (≈12 hours): Hormonal decline begins; the discharge becomes less noticeable.
Diestrus (≈48 hours): The reproductive system rests; no external signs are evident.

Mating typically occurs during estrus. If a male is present, fertilization can happen within a few hours of the female entering this stage. Gestation lasts 19 to 21 days, after which a litter of three to ten pups is born.

Preventing unwanted breeding requires either separating sexes before the first estrus or employing a reliable contraceptive method such as hormonal implants approved for rodents. Regular monitoring of the genital area and behavior allows owners to identify the estrus phase promptly and take appropriate action.

Understanding the timing and physical markers of the reproductive cycle enables responsible pet ownership, reduces stress on the female, and supports overall health management for domestic grey mice.

Veterinary Care

Finding an Exotic Pet Vet

When a grey mouse requires veterinary attention, locate a practitioner experienced with exotic small mammals. Begin by consulting professional directories that specialize in non‑traditional pets; reputable sources include the American Association of Laboratory Animal Medicine (AALAM) and the International Association of Veterinary Specialists (IAVS). These platforms list certified veterinarians by region and species expertise.

Next, verify the clinic’s capabilities. Confirm that the facility has appropriate equipment for rodents, such as low‑stress handling tools, anesthetic protocols tailored to small mammals, and diagnostic imaging calibrated for tiny patients. Request references from recent mouse owners or ask the clinic to provide case examples involving similar rodents.

Finally, assess logistical considerations. Ensure the practice’s operating hours align with your schedule, and confirm that emergency services are available or that a referral network exists for after‑hours care. Record the clinic’s contact information, including a direct line for urgent inquiries, and keep a printed copy of the veterinarian’s credentials for quick reference.

Steps to secure an exotic‑pet veterinarian for a domestic grey mouse

Search specialized veterinary directories (AALAM, IAVS, local exotic‑pet societies).
Contact shortlisted clinics; ask about rodent‑specific experience and equipment.
Request client testimonials or case studies involving grey mice.
Verify emergency coverage and after‑hours protocols.
Document contact details and schedule a preliminary health check.

Routine Check-ups

Routine veterinary examinations are essential for maintaining the health of a domestic grey mouse. Regular assessments allow early detection of common ailments, ensure proper growth, and support a stable environment.

Key components of a standard check‑up include:

Physical inspection of fur, skin, and eyes for lesions or discoloration.
Measurement of body weight and comparison with breed‑specific growth charts.
Evaluation of dental condition, focusing on overgrown incisors that can impair eating.
Examination of nails and foot pads for injuries or excessive length.
Observation of behavior, activity level, and appetite to identify stress or illness.
Review of cage cleanliness, ventilation, and substrate condition.

Frequency depends on age and health status. Juvenile mice benefit from examinations every two weeks until maturity; adult mice should be examined monthly, with adjustments for any chronic conditions.

Preparation for a veterinary visit involves transporting the mouse in a secure, ventilated carrier, minimizing handling stress, and providing a concise health history, including recent diet changes, observed symptoms, and medication records.

Immediate veterinary attention is warranted if the mouse exhibits:

Sudden weight loss exceeding 10 % of body mass.
Persistent respiratory sounds such as wheezing or crackles.
Unexplained lethargy or refusal to eat.
Visible wounds, swelling, or discharge from any body part.

Adhering to a disciplined schedule of routine check‑ups protects the wellbeing of a grey mouse and promotes a long, thriving companionship.