Cats can eat yogurt safely if it is plain, unsweetened, and unflavored. Although many cats are lactose intolerant, yogurt contains less lactose than milk and has probiotics that help cats digest lactose more easily. Yogurt can be a nutritious occasional treat providing proteins, calcium, vitamins, and probiotics beneficial for digestion and immune support. However, yogurt should only be given in small amounts and never flavored or sweetened varieties, as these may contain toxic ingredients like xylitol or excessive sugar harmful to cats. It is best to start with a small amount and monitor the cat for any digestive upset, and avoid feeding yogurt to kittens because of their sensitive digestive systems.