Cats are obligate carnivores
Unlike dogs, cats must get most of their nutrition from animal protein. Human foods should only ever be occasional treats making up a small fraction of their diet — a complete, balanced cat food should always be the foundation. Many "safe" plant foods offer little benefit to a cat and are best given sparingly, if at all.
The most dangerous foods for cats
Cats are especially sensitive to onion and garlic. Also never give chocolate, grapes or raisins, alcohol, caffeine, or anything containing xylitol.
Frequently asked questions
Can cats eat tuna?
Only occasionally. Canned tuna in water (not oil or brine) as a rare treat is okay, but it's not nutritionally complete and too much can cause mercury exposure and a fish addiction that leads to a poor diet.
Can cats eat dog food?
A bite won't hurt, but dog food lacks taurine and other nutrients cats need, so it must never replace cat food.
Can cats drink milk?
Most adult cats are lactose intolerant. Despite the stereotype, milk often causes diarrhea and upset stomach — water is best.
Related: cat food calculator · can my dog eat this?