Can Cats Eat Blueberries?
By Pettings · Sources checked Nov 2, 2026
Cats can eat small amounts of plain fresh blueberries. Two or three washed berries, cut in half, are fine for most adult cats, and frozen berries work once they are thawed. Blueberries are not something a cat needs, though. A review in Nutrition Research Reviews links cats' dietary requirements for taurine, arginine, preformed vitamin A and a high level of protein to an evolutionary diet of animal tissue, and fruit offers little or none of those.
What Blueberries Offer a Cat
Blueberries contain water, natural sugar, a little fiber and plant pigments that people often eat them for. None of that fills a gap in a complete and balanced cat food, and we did not find evidence that blueberries change anything measurable in cats. Some cat foods and treats list blueberries as an ingredient, which is a recipe choice rather than a sign that cats need them. Cats also lack a working sweet taste receptor, as researchers reported in PLOS Genetics. A cat that chases a blueberry across the floor may be more interested in the round shape than in eating it.
How Much Blueberry Can a Cat Have?
For a 10-pound adult cat with no food allergy and no medical condition, 2 or 3 blueberries is enough, and that is only a few calories. WSAVA advises keeping treats under 10 percent of daily calories, roughly 24 treat calories a day for a cat this size, and says treats should never replace a complete and balanced meal. At this size, a few times a week at most is reasonable. Kittens, seniors and cats with diabetes, kidney disease, urinary stones, pancreatitis or food allergies should get the vet's approval first.
How to Serve It
Rinse fresh blueberries well and pull off any stems. Cut each berry in half so it cannot be swallowed whole; a whole berry is about the right size to lodge in a small throat. Frozen blueberries should be thawed and halved, not served frozen and hard. Skip blueberry muffins, pancakes, pie filling, jam and yogurt. They add sugar, fat and dairy, and the ASPCA notes that xylitol, a sweetener found in some baked goods, can cause low blood sugar and liver damage in pets, while dairy can cause diarrhea. Dried blueberries are usually sweetened, so leave those out too. Offer one half the first time and watch for loose stool.
Ask your veterinarian before offering blueberries to a cat with a medical condition or a special diet.
Common Questions
Can kittens eat blueberries?
Kittens are better off without them for now. A whole blueberry is a choking-size piece for a small kitten, and growing kittens need the full ration of a complete kitten food. WSAVA notes that treats should never replace a complete and balanced meal. Ask your veterinarian before you start giving any fruit to a kitten.
Can cats eat frozen blueberries?
Yes, once they are thawed. A frozen blueberry is hard, and a cat may try to swallow it whole. Let the berries thaw, cut each one in half and offer 2 or 3 halves to a 10-pound adult cat. Use plain frozen blueberries with no added sugar or syrup.
Can cats eat blueberry muffins?
No. Muffins bring sugar, butter, flour and sometimes xylitol, a sweetener the ASPCA says is found in baked goods and can cause low blood sugar and liver damage in pets. If your cat ate part of a muffin and you are not sure what sweetener was used, check the label or recipe and call your veterinarian or the ASPCA Animal Poison Control Center.
Can cats eat blueberry yogurt?
It is better to skip it. The ASPCA notes that pets have little of the enzyme that digests lactose, so dairy can cause diarrhea. Flavored yogurt also has added sugar, and some light versions use sweeteners such as xylitol, which the ASPCA warns can cause low blood sugar in pets. Offer a halved fresh blueberry instead.
Why does my cat like blueberries?
It is probably not the taste of sugar. Researchers writing in PLOS Genetics found that cats have a broken version of a gene needed for the sweet taste receptor, which likely explains why they ignore sugar. A cat may enjoy a blueberry for the way it rolls, its smell or its texture. A few halved berries are fine if your cat likes them.