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Quick answer: Safe in moderation
Apples are safe and healthy for dogs. Apples are safe for cats in small amounts.
An apple is the round, edible fruit of an apple tree. Fruit trees of the orchard or domestic apple, the most widely grown in the genus, are cultivated worldwide. Read more on Wikipedia →
Remove seeds and core first. Seeds contain small amounts of cyanide. Slices make a great low-calorie treat.
The general rule of thumb is the 10% guideline — treats and extras should not exceed 10% of your dog's total daily calories. The remainder should come from a balanced commercial or vet-formulated diet. Introduce apple gradually, watching for any sign of digestive upset over the first 24–48 hours.
Apples, fuji, with skin, raw — 64.7 kcal, 0.15 g protein, 0.16 g fat, 15.7 g carbohydrates, 2.08 g fiber, 13.3 g sugar. Source: USDA FoodData Central.
Remove seeds and core. Apple flesh is non-toxic and some cats may enjoy small pieces. Not nutritionally necessary for cats but safe as an occasional treat.
Cats are obligate carnivores and don't need fruit, vegetables, or grains nutritionally. Most cats are indifferent to apple but a tiny taste is unlikely to cause harm in a healthy adult. Skip it for cats with diabetes, kidney disease, or known food sensitivities, and never replace a balanced commercial cat diet with human food.
If you're freezing portions of apple as a hot-weather treat, freeze in single-serving sizes so you're not thawing more than your pet will eat in one session.
Even with safe foods, individual sensitivities are real. Stop feeding and call your vet if you see any of:
If your pet's symptoms are severe, contact an emergency veterinarian immediately. In the United States the ASPCA Animal Poison Control Center is reachable 24/7 at +1 (888) 426-4435.
Yes, in moderation. Apple is a safe occasional treat for most healthy dogs when prepared correctly. Stick to the 10% treat rule and avoid added sugar, salt, or spices.
A teaspoon to a tablespoon for small dogs, a tablespoon to two for medium dogs, and up to a small handful for large dogs. Treats and extras should not exceed 10% of daily calories.
Puppies over 8 weeks old can usually try a tiny piece of apple. Their digestive systems are sensitive, so introduce gradually and watch for vomiting or loose stools.
In small amounts, yes — see the cat section above. Cats are obligate carnivores and don't need fruit or vegetables nutritionally.
Yes, plain cooked apple is usually fine. Avoid adding butter, oil, salt, sugar, garlic, or onion — all of which can upset or harm pets.
Watch for vomiting, diarrhea, or lethargy over the next 12–24 hours. If symptoms appear or you're concerned, call your veterinarian. The ASPCA Poison Control line (+1 888 426 4435) can also advise.