What do domestic mice eat? - briefly
Pet mice eat a mix of grains, seeds, fruits, vegetables, and protein sources such as insects or formulated rodent pellets.
What do domestic mice eat? - in detail
Domestic mice require a balanced diet that supplies protein, fat, fiber, vitamins, and minerals. Commercial mouse pellets or laboratory chow form the nutritional core; these products are formulated to provide approximately 14–20 % protein, 4–6 % fat, and essential micronutrients. Pellets should be offered daily in a clean feeder, with fresh water always available.
Supplementary foods enhance variety and encourage natural foraging behavior. Acceptable fresh items include:
- Small pieces of apple, banana, or pear (seedless, skin removed)
- Carrot or cucumber slices
- Leafy greens such as romaine lettuce, kale, or spinach (limited to avoid oxalates)
- Cooked, unseasoned chicken or boiled egg white for additional protein
- Small amounts of plain, unsweetened yogurt or cottage cheese for calcium
Treats must be limited to no more than 5 % of total intake to prevent obesity. Suitable options are:
- Whole grain cereal (unsweetened)
- Small quantities of nuts (unsalted, unroasted)
- Commercial mouse treats formulated without added sugars or artificial colors
Foods that pose health risks must be excluded. Toxic items include chocolate, caffeine, alcohol, raw beans, onions, garlic, citrus seeds, and any processed foods containing salt, spices, or preservatives. High‑fat snacks such as chips, nuts with shells, or greasy leftovers can cause hepatic lipidosis and should be avoided.
For owners who prepare a homemade diet, the following ratio is recommended: 50 % high‑quality pellet or lab chow, 30 % fresh vegetables and fruits, and 20 % protein sources. All fresh foods should be washed, cut into bite‑size pieces, and introduced gradually to monitor tolerance. Calcium supplementation may be necessary if the diet lacks dairy or leafy greens; a few drops of liquid calcium supplement can be added to water weekly.
Feeding frequency typically involves providing constant access to pellets, with fresh supplements refreshed every 24 hours. Remove uneaten perishable items after one day to prevent spoilage and bacterial growth.
Monitoring body condition, coat quality, and activity levels helps assess nutritional adequacy. Weight gain exceeding 1 % per week indicates excess calories, while weight loss, hair loss, or lethargy suggests deficiencies or illness, warranting veterinary evaluation.