Cats can eat bananas, but only in small amounts and as an occasional treat. Bananas are not toxic to cats, but because cats are obligate carnivores, their digestive systems are not well-suited to digesting fruits like bananas. Bananas are high in sugar and carbohydrates, which provide no real nutritional benefit to cats and can lead to health issues such as obesity or diabetes if given in excess. If feeding bananas to cats, it should be done in moderation (a small piece or bite), and they should be monitored for any signs of digestive upset like vomiting, diarrhea, or constipation. Overall, bananas can be safe for cats but are not necessary or typically recommended as part of their diet.