Small Animal Nutrition Guide 2026: Complete Feeding Manual

Rabbits should have unlimited access to fresh timothy hay 24/7. An average-sized rabbit (5-6 lbs) will eat approximately their body size in hay daily. Hay should comprise 80-90% of their diet. Always ensure hay is fresh, dry, and free from mold. Provide hay in racks or boxes to keep it clean, and refresh it daily even if some remains uneaten to encourage consumption.

No, guinea pigs should not eat rabbit food. While both species require unlimited hay, guinea pigs have a critical need for vitamin C that rabbits don't. Rabbit pellets lack added vitamin C, and guinea pigs cannot synthesize their own. Feeding rabbit food to guinea pigs leads to vitamin C deficiency (scurvy), which can be fatal. Always feed species-specific food formulated for guinea pigs with stabilized vitamin C.

Hamsters are selective eaters and often pick out high-fat, tasty seeds like sunflower seeds, leaving behind more nutritious pellets and grains. This leads to nutritional imbalances and obesity. Solutions include: switching to a lab block/pellet diet (uniform kibble prevents selective eating), offering seed mix only as occasional treat, or hand-feeding a balanced mix to ensure all components are eaten. Monitor your hamster's weight and adjust portions accordingly.

While ferrets can survive on high-quality kitten food in emergencies, it's not ideal long-term. Ferrets are obligate carnivores requiring higher protein (32-40%) and fat (18-22%) than even cats. Most cat foods contain plant proteins and carbohydrates that ferrets cannot properly digest. Long-term feeding of inappropriate food contributes to insulinoma, obesity, and poor coat condition. Invest in ferret-specific kibble or consider a balanced raw diet for optimal health.

It depends on the species: Rabbits: 1-2 cups per 2 lbs body weight daily. Guinea pigs: 1 cup per pig daily, focusing on vitamin C-rich vegetables. Hamsters: Teaspoon-sized portion daily. Ferrets: None - they are obligate carnivores. Chinchillas: None - fresh vegetables can cause fatal bloating. Always introduce new vegetables gradually and remove uneaten portions within 4 hours to prevent spoilage.

Guinea pigs need 10-30 mg of vitamin C daily. Best methods:
Fresh foods: Red bell peppers (highest content), kale, parsley, broccoli.
Supplemented pellets: Use fresh pellets (vitamin C degrades over time) and store in cool, dark place.
Liquid supplements: Add to water (change water daily as vitamin C degrades in water).
Tablets: Guinea pig-specific vitamin C tablets. Never rely solely on vitamin C in water, as consumption varies. Fresh vegetables are the most reliable source.

This is normal behavior called cecotrophy. Rabbits produce two types of droppings: hard fecal pellets and soft cecotropes. Cecotropes are nutrient-rich pellets that rabbits re-ingest directly from the anus to absorb essential nutrients (particularly B vitamins) produced by bacteria in the cecum. This is a vital part of rabbit digestion. If you see your rabbit consuming cecotropes, it's healthy behavior. If cecotropes are being left uneaten (often sticking to fur), consult a vet as this indicates a dietary or health issue.

Fruits should be occasional treats, not regular diet components:
Rabbits: 1-2 tablespoons 1-2 times weekly (high sugar).
Guinea pigs: Small piece weekly (vitamin C fruits preferred).
Hamsters: Tiny piece weekly (dwarf species less due to diabetes risk).
Ferrets: Never (carnivores).
Chinchillas: Never (can cause fatal digestive issues). Always remove seeds/pits which can be toxic. Monitor for digestive upset when introducing new fruits.

Regular weighing is essential. Use a kitchen scale weekly. Also perform body condition checks:
Ribs: Should be easily felt but not visible.
Waist: Visible when viewed from above.
Abdomen: Should tuck up when viewed from side. Consult breed/species weight charts but remember individuals vary. Sudden weight changes (gain or loss) of more than 10% require veterinary attention. Keep a weight log to track trends over time.

Loss of appetite is a medical emergency for most small animals, especially herbivores. Rabbits and guinea pigs can develop fatal gastrointestinal stasis within 12-24 hours of not eating. Immediate steps:
Check for obvious issues (dental problems, environmental stress).
Offer favorite foods to stimulate appetite.
Contact your veterinarian immediately - don't wait. For herbivores, syringe feeding critical care formula may be needed until veterinary care is available. Never assume a small animal will "start eating again" - seek professional help promptly.

Very few human foods are safe across all small pet species due to their varied dietary needs. Generally safe in tiny amounts: Plain cooked chicken (for omnivores/carnivores), cooked egg (for omnivores/carnivores), plain cooked oatmeal (for some rodents occasionally). However, most human foods contain seasonings, oils, or other ingredients harmful to small pets. It's safer to stick to species-appropriate commercial foods and known safe fresh foods. When in doubt, don't feed it.

Storage life varies: Pellets with stabilized vitamins: 3-6 months after opening if stored properly (cool, dark, dry place in airtight container). Vitamin C-fortified guinea pig pellets: 2-3 months max (vitamin C degrades quickly). Seed mixes: 2-3 months (fats can go rancid). Hay: 6-12 months if kept dry. Always check expiration dates, buy appropriate sizes for your pet's consumption rate, and store in original bag inside airtight container. Discard if you notice unusual odor, discoloration, or pests.