Walnuts are generally not recommended for cats. Walnuts are high in fat, which may increase the metabolic burden on cats and lead to obesity. Furthermore, nuts such as walnuts contain potential toxins that can cause poisoning in cats.

Walnuts can get stuck in a cat's throat and cause choking, especially for kittens that eat quickly. Therefore, for your cat's health, it's best to avoid feeding them walnuts. If you want to supplement your cat's nutrition, you can choose cat-specific food or consult a veterinarian for more professional advice.