Generally, your cat should get everything they need from a 100% complete and balanced cat food but some human foods are safe. Cats can eat cooked meat (i.e., beef, turkey, chicken) and cooked and de-boned fish (like tuna). Avoid raw meats and fish as they can make your cat sick.
cats can eat
Where there's lots of human foods that are safe for cats to eat, there's also plenty out there that should be avoided. Some of the foods/ingredients that are poisonous or harmful for cats are
including milk, cheese and yoghurts.
dark chocolate is particularly toxic.
particularly macadamia nuts and walnuts
garlic, onions, chives, leeks, shallots and scallions
usually found in sweets, certain peanut butters and gum.