Cats can technically eat kale, but it is generally not recommended. Kale is not toxic to cats, but it can pose several health risks such as causing Heinz body anemia, interfering with thyroid function, digestive upset, and formation of calcium oxalate stones that may affect the urinary system. Cats are obligate carnivores and their nutritional needs are best met through animal- based proteins, so kale does not provide significant benefits to them and may be harmful if consumed in large amounts or regularly. If a cat eats a small amount of kale occasionally, it is unlikely to cause harm, but kale should not be a staple or significant part of their diet. Cooking kale (steaming or boiling) can reduce some harmful compounds, but even then it should be given only in tiny portions as a rare treat, avoiding any additives or seasonings. If any signs of digestive upset or allergic reactions occur, it is important to consult a veterinarian promptly.
