Cats can eat mulberries. Mulberries are rich in active protein, vitamins, amino acids, minerals, carotene and other nutrients. Their nutritional value is four times that of grapes, which are forbidden fruits for cats. Mulberries are a good alternative.

However, mulberries contain a relatively high amount of trypsin inhibitors, which can inhibit a cat's absorption of protein. In addition, mulberries can irritate a cat's digestive system, so cats should not eat too many mulberries.