List of articles № 99
How to Choose Premium Food for Rats
Rats require a steady supply of high‑quality protein to sustain growth, tissue repair, and immune function. Adult laboratory rats typically need 14–16 % protein by weight in their diet, while growing juveniles and breeding females may require 18–20 % to support rapid development and lactation.. Date latest changes:
Can Decorative Rats Be Fed Peaches?
Peaches are occasionally offered to ornamental rats as a treat, but their nutritional profile demands careful consideration. Two primary components influence suitability: simple sugars and dietary fiber. Simple sugars in peach flesh consist mainly of fructose, glucose and small amounts of sucrose, together providing roughly 9 g of sugar per 100 g of fruit.. Date latest changes:
The Most Dangerous Rat in the World: Species and Traits
The rat identified as the most hazardous globally carries a suite of pathogens that infect humans through direct contact, bites, scratches, and contamination of food or water. Transmission occurs when saliva, urine, feces, or ectoparasites such as fleas and mites come into contact with open wounds or mucous membranes.. Date latest changes:
Causes of Vaginal Bleeding in Rats
The female rat reproductive system consists of paired ovaries, oviducts, a bicornuate uterus, cervix, and a relatively short vagina. Ovaries are located dorsally near the kidneys and contain follicles that progress through the four stages of the estrous cycle (proestrus, estrus, metestrus, diestrus).. Date latest changes:
Rats and squirrels: Common traits of the family
Rats and squirrels belong to the order Rodentia, the most diverse mammalian clade. Molecular phylogenies place their lineages within two distinct families—Muridae for rats and Sciuridae for squirrels—yet both trace back to a common rodent ancestor that existed approximately 40–50 million years ago.. Date latest changes:
Boric acid (H₃BO₃) is a monobasic, weak inorganic acid with a molecular weight of 61.83 g·mol⁻¹. Its crystalline form consists of planar BO₃ groups linked by hydrogen bonds, producing a layered lattice that readily hydrates to form boric acid monohydrate.. Date latest changes:
Why Do Rats Frequently Groom Themselves?
Rats groom themselves because the behavior is rooted in an ancient survival mechanism. The act of cleaning fur, whiskers, and paws removes parasites, debris, and excess oil, directly preserving the integrity of the skin and sensory organs. By maintaining a tidy coat, rats reduce the risk of infection and improve the efficiency of tactile perception, which is vital for navigation and foraging.. Date latest changes:
Foam Insulation Resistant to Mice and Rat Gnawing
Rodents gnaw through foam insulation to reach warm interior spaces, creating openings that compromise the building envelope. The resulting damage manifests in several distinct ways. Loss of continuous thermal barrier, leading to increased heat transfer and higher energy consumption.. Date latest changes:
Scents Rats and Mice Dislike in the Home
Rats and mice rely on a highly specialized olfactory system to navigate their environment, locate food, and detect threats. The peripheral apparatus consists of the main olfactory epithelium, the vomeronasal organ, and the accessory olfactory epithelium.. Date latest changes:
Which Mouse to Choose as a Pet
Fancy mice are a distinct category of pet rodents distinguished by their elaborate coat patterns, larger size, and often unique coloration. Breeds such as the Rex , Silkie , Baldwin , and Japanese Fancy exhibit these traits, making them popular among enthusiasts who prioritize visual appeal.. Date latest changes:
Domestic decorative mouse: care and maintenance
Domestic mice kept for ornamental purposes come in several recognized breeds, each with distinct coat patterns, body size, and temperament. Understanding these differences guides appropriate enclosure setup, nutrition, and grooming routines.. Date latest changes:
Do All Mice Love Cheese? Myths and Reality About Food Preferences
The belief that mice are avid cheese eaters originates in medieval food storage practices, where hard cheeses were common staples and often left in pantries vulnerable to rodent intrusion. Early references appear in 13th‑century agricultural manuals that describe mice gnawing at cheese wheels, establishing a narrative that persisted through printed pamphlets and folk tales.. Date latest changes:
The mouse‑averse grass is often cited as a natural deterrent, yet several assumptions about plant‑based repellents persist. Many believe any aromatic herb repels rodents; only specific volatile compounds in certain species affect mouse behavior.. Date latest changes:
Can mice live in expanded clay?
Expanded clay consists of granular silica‑alumina particles that have been heated to 1,200 °C, causing them to soften, expand, and develop a porous matrix. The raw material is typically a mixture of kaolin, feldspar, and sand, each contributing to the final mineral composition.. Date latest changes:
Effectiveness of Mouse Repellents
Various mouse deterrents fall into distinct categories, each employing a specific mechanism to reduce rodent activity. Understanding these categories is essential for selecting an appropriate solution. Ultrasonic devices emit high‑frequency sound waves beyond human hearing, creating an uncomfortable acoustic environment for mice.. Date latest changes:
What Can Mice Not Gnaw Through?
Mice possess a pair of continuously erupting incisors whose crowns are covered by enamel on the labial surface and dentin on the lingual side. The enamel–dentin junction creates a self‑sharpening edge, allowing the animal to reduce material that is softer than enamel.. Date latest changes:
Where do black mice in the house come from
Gaps and cracks in foundations and walls provide direct entry points for black mice that appear inside homes. These rodents locate any discontinuity in the building envelope and use it to move from the soil or surrounding structures into interior spaces.. Date latest changes:
Effective folk remedies against mice in the house
Droppings and urine trails serve as reliable evidence of rodent activity. Fresh droppings appear as small, dark pellets, typically 3–5 mm long, found along walls, behind appliances, and in pantry corners. Urine trails leave faint, often invisible, wet lines that become detectable when a white cloth is pressed against surfaces;. Date latest changes:
Effectiveness and Reviews of Ultrasonic Repellers for Rats and Mice
Ultrasonic devices emit sound waves typically between 20 kHz and 65 kHz, a range that exceeds human hearing but falls within the auditory sensitivity of rats and mice. Laboratory measurements show that rodent cochleae respond most strongly to frequencies around 30 kHz to 40 kHz, where the auditory nerve firing rate increases sharply.. Date latest changes:
Ultrasonic Rat and Mouse Repeller: Clean Home Without Pests
Ultrasonic frequencies occupy the range above 20 kHz, beyond the upper limit of human auditory perception. Rodents detect sound up to approximately 80–90 kHz, making frequencies between 30 kHz and 70 kHz particularly relevant for repellence devices.. Date latest changes:
Inhalation devices are employed in rodent research to manage frequent health problems that affect the respiratory system. Common conditions addressed by these devices include: Bacterial or viral pneumonia, which causes alveolar inflammation and reduced gas exchange.. Date latest changes:
Cat Catches a Rat: Observations of Hunting Behavior
Cats belong to the Felidae family, which emerged in the late Oligocene, roughly 25 million years ago. Early felids displayed elongated bodies, retractable claws, and binocular vision—features that enhanced stealth and precision in capturing small vertebrates.. Date latest changes:
Keeping Domestic Rats: Owner Recommendations
Domestic rats possess a well‑developed cerebral cortex, enabling problem‑solving, memory formation, and social learning. Experiments demonstrate that individuals can navigate mazes, locate hidden food, and remember routes for weeks after initial exposure.. Date latest changes:
Rat Squeaking: How to Use a Sound Repellent
Understanding rat vocalizations is essential for selecting an acoustic deterrent that targets the frequencies rats actually use. Rats communicate across a wide acoustic spectrum, and each vocal type serves a specific behavioral function. Ultrasonic squeaks (20–80 kHz):. Date latest changes:
Cilantro (Coriandrum sativum) offers several nutritional advantages for pet rodents when included in a balanced diet. The herb contains vitamins A, C, and K, which support visual health, immune function, and blood clotting. Its mineral profile includes potassium, calcium, and magnesium, contributing to electrolyte balance and bone maintenance.. Date latest changes:
Acorns are the seeds of oak trees and possess a distinctive nutritional profile that influences their suitability for rodent consumption. The primary macronutrients in mature acorns include: Carbohydrates: 45–55 % of dry weight, predominantly starch.. Date latest changes:
Rat Cookies: Simple Treat Recipe
Homemade rat cookies allow precise control over ingredients, eliminating artificial additives and excess sugars common in commercial treats. By selecting whole‑grain flour, unsalted nut butter, and fresh vegetables, owners provide a balanced source of carbohydrates, protein, and fiber that supports digestive health and sustained energy.. Date latest changes:
Rats are highly social mammals whose survival and reproductive success depend on complex group dynamics. In wild colonies, individuals form hierarchical structures where dominant males and females control access to resources and breeding opportunities.. Date latest changes:
Why Do Rats Have Yellow Teeth?
Rats possess continuously growing incisors whose outer layer is enamel enriched with iron compounds. Unlike the hydroxyapatite‑dominated enamel of most mammals, rat enamel incorporates ferric oxide particles that are deposited during tooth development.. Date latest changes:
How to Properly Set Up a Rat Cage?
Rats require ample floor area to move, explore, and engage in natural behaviors. The minimum recommended space per adult rat is 1 sq ft (approximately 30 × 30 cm) of solid floor, with additional vertical clearance of at least 12 in (30 cm) to accommodate climbing and nesting.. Date latest changes:
How to Set a Trap for Catching Rats: Instructions
Droppings and urine trails provide reliable indicators of rat presence and movement patterns. Recognizing these signs enables precise placement of capture devices, increasing success rates. Droppings appear as small, dark, cylindrical pellets, typically 5‑10 mm in length.. Date latest changes:
Rat models remain the primary experimental platform for elucidating the pathophysiology of cerebral ischemia. Their cerebrovascular architecture, neurovascular coupling, and genetic manipulability closely mirror human conditions, enabling precise replication of infarct size, location, and temporal evolution.. Date latest changes:
Desor’s experiment with rats: Key findings
Early investigations into animal behavior laid the groundwork for later experimental work with rodents. Researchers such as Konrad Lorenz, Nikolaas Tinbergen, and B.F. Skinner documented innate responses, instinctual patterns, and operant conditioning mechanisms that remain reference points for contemporary studies.. Date latest changes:
Zoonotic diseases are infections that can be transmitted between animals and humans. «Zoonotic disease» refers to any pathogen—viral, bacterial, parasitic, or fungal—that naturally moves from a vertebrate host to a human host, or vice versa.. Date latest changes:
How to Make a Homemade Rat Repellent from Alabaster and Flour
Rodents act as vectors for a range of pathogens that can compromise human health. Their droppings, urine, and saliva contaminate food supplies, surfaces, and water sources, creating direct exposure routes for infectious agents. Contact with infested environments also increases the likelihood of allergic reactions and asthma exacerbations due to rodent-derived allergens.. Date latest changes:
Why a Rat Breathes Hard and Makes Sounds: Causes and Recommendations
Normal rat respiration occurs at a rapid, regular cadence. In adult laboratory rats the average rate ranges from 70 to 115 breaths per minute while at rest, with slight increases during handling or mild activity. The inhalation–exhalation cycle remains symmetrical, and no pauses or irregular intervals appear in a healthy animal.. Date latest changes:
Safe Poison for Mice and Rats: Protecting Household Pets
Rodent control agents labeled as pet‑friendly still present measurable hazards to people who handle, store, or live near treated areas. The reduced toxicity to cats and dogs does not eliminate acute or chronic effects for humans. Exposure occurs through several pathways:. Date latest changes:
Ultrasonic Mouse Repeller: Effectiveness and Use
Ultrasonic pest repellers are electronic devices that emit high‑frequency sound waves beyond the range of human hearing. The acoustic signal is designed to create an uncomfortable environment for small mammals such as mice, rats, and other rodents, prompting them to vacate the treated area.. Date latest changes:
How sound can attract mice: research
Mice possess a broad auditory spectrum, detecting sounds from approximately 1 kHz to 100 kHz, with peak sensitivity between 10 kHz and 30 kHz. Laboratory recordings show that ultrasonic vocalizations of conspecifics, typically around 40–70 kHz, trigger immediate orienting responses.. Date latest changes:
Why Do Cats Love Catching Mice? Biological Reasons
Domesticated felines retain a suite of ancestral behaviors that directly support predation on rodents. Genetic studies show that the domestic cat’s genome remains closely aligned with that of its wild progenitor, preserving neural pathways that trigger rapid visual tracking, precise paw coordination, and heightened auditory sensitivity.. Date latest changes: