Which human foods are safe for cats, and which should I never give?
Clearly safe in small amounts: plain cooked chicken or turkey, plain fully-cooked egg, and small pieces of plain cooked fish. Use caution with dairy (cheese/milk) and tuna. Never give onion, garlic, chocolate, grapes/raisins, xylitol, or alcohol - those go to poison control, not a portion size.
Applies to: Healthy adult cats getting an occasional treat alongside a complete-and-balanced diet. Human food is a topper, never a meal. Kittens, seniors, and cats with medical conditions should get treats cleared by a vet.
Steps
- Plain cooked chicken or turkey - boneless, skinless, unseasoned; up to ~2 tbsp/day for an adult cat (PetMD)
- Plain fully-cooked egg - cooked to 160F, no salt/butter/oil, ~1 tablespoon (PetMD)
- Small pieces of plain cooked fish - occasional, boneless
- Always remove bones; never add garlic/onion salt or gravy
- Tuna: occasional treat only, chunk-light not albacore, never a staple - mercury and nutritional imbalance risk (Tufts)
- Cheese and milk: many cats are lactose-intolerant, so dairy can cause diarrhea/digestive upset (ASPCA) - tiny amounts at most, skip if it causes GI upset
- All of the above still count toward the 10% treat limit
- Onion, garlic, chives (and onion/garlic powder) - red-blood-cell damage/anemia
- Chocolate, coffee, caffeine - methylxanthines; heart, tremors, seizures
- Grapes and raisins - kidney damage
- Xylitol (sugar-free gum/candy/baked goods) - low blood sugar, liver damage
- Alcohol and raw yeast dough - can be life-threatening
- Also avoid: macadamia nuts, raw egg/raw meat (Salmonella/E. coli), cooked bones, heavily salted foods
Normal vs keep-watching
Normal: Cats are obligate carnivores; a small plain-cooked-meat treat now and then is normal. Human food should never crowd out their balanced diet.
Keep watching: After any new treat, watch for vomiting, diarrhea, drooling, or unusual lethargy - and stop the treat if it causes upset.
What changes this answer
- Toxic item involved -> this stops being a food question and becomes poison control + vet, now
- Kitten, senior, pregnant, or a cat with kidney/GI/pancreatitis history -> clear treats with the vet first
- Overweight cat -> tighten the 10% treat budget
- Known dairy intolerance -> skip cheese/milk entirely
- Raw diet interest -> raw egg/meat carry pathogen risk; discuss safe handling with a vet
Common mistakes
- Sharing seasoned/cooked dishes that contain onion or garlic
- Treating tuna as a daily staple
- Giving milk because 'cats like it' (most are lactose-intolerant)
- Leaving toxic foods (chocolate, grapes, gum with xylitol) within reach
- Letting treats replace part of the balanced diet
Sources
- PetMD (vet-reviewed pet-health authority) tier2 · Tier 2 · verified 2026-07-18
- PetMD (vet-reviewed pet-health authority) tier2 · Tier 2 · verified 2026-07-18
- Tufts University Cummings School of Veterinary Medicine (academic veterinary authority) tier1 · Tier 1 · verified 2026-07-18
- ASPCA Animal Poison Control Center (professional poison-control authority) tier1 · Tier 1 · verified 2026-07-18
Real questions cat owners ask
- Can cats eat cooked chicken? Yes - plain, boneless, unseasoned, in small amounts.
- Can cats have tuna? Only occasionally, chunk-light, never as a main food.
- Can cats drink milk? Best avoided - most adult cats are lactose-intolerant.
- My cat ate onion/garlic/chocolate/grapes/xylitol - what do I do? Call ASPCA Poison Control at (888) 426-4435 and your vet immediately; there is no safe amount.