Cats should not eat cream. Cream contains milk and sugar, both of which are not easily digested and absorbed by cats. This can lead to lactose intolerance, causing gastrointestinal problems such as diarrhea and vomiting.

Furthermore, the high fat content of butter can burden a cat's pancreas and liver, and may even lead to serious diseases such as pancreatitis. A cat's diet should primarily consist of cat food, with appropriate additions of cooked meat and vegetables, but human foods such as butter should be avoided to prevent adverse effects on their health.