Cats can drink soy milk, but only in moderation. Soy milk is rich in plant protein, vitamins, and trace elements, which can supplement a cat's needs for protein and other nutrients. However, cats have low absorption efficiency for plant protein, and excessive intake may lead to symptoms such as indigestion, vomiting, and diarrhea.

In addition, the lactose content in soy milk may be harmful to some cats, especially those with lactose intolerance. Therefore, it is recommended to give cats a moderate amount of soy milk and observe their reaction. If you need to supplement your cat's protein intake, you can also choose pet-specific goat milk, nutritional paste, beef, etc.