Cats can have raspberries in small amounts as an occasional treat. Raspberries are generally safe for cats and contain vitamins, fiber, and antioxidants that can benefit their health. However, cats are obligate carnivores, so fruit is not a natural part of their diet, and feeding too many raspberries can cause digestive upset such as diarrhea or vomiting due to the high fiber and sugar content. It is best to offer just a tiny amount initially and monitor for any adverse reactions. Additionally, raspberries contain a small amount of xylitol which can be toxic, so moderation is crucial. Fresh, plain raspberries are preferable, avoiding any added sugars or other ingredients. If a cat has any sensitive stomach issues or is pregnant, raspberries should be given with extra caution or avoided. Overall, raspberries can be a low-calorie, hydrating treat but only in moderation to prevent negative effects like obesity or digestive problems.