Can Cats Eat Watermelon?
On a hot summer day, few snacks beat a cold slice of watermelon, and your cat may want a taste. Can cats eat watermelon? Yes, cats can eat small pieces of seedless watermelon flesh. Watermelon is non-toxic to cats and is mostly water. The seeds and rind, however, should stay off the menu.
Here are five refreshing facts every cat owner should know.
Fact 1: Watermelon Is Non-Toxic to Cats
Watermelon is on the ASPCA’s list of plants and foods that are non-toxic to cats. A small bite of the red or pink flesh won’t hurt a healthy adult cat.
As always, cats are obligate carnivores. They don’t need fruit, and their main nutrition should come from high-quality cat food. Watermelon is just an occasional, harmless snack.
Fact 2: It’s About 92% Water
Watermelon is roughly 92% water, which makes it one of the most hydrating fruits. Many cats don’t drink enough water, especially those on dry food. A tiny piece of watermelon adds a little extra moisture.
It also contains small amounts of vitamins A, B6, and C and potassium. Cats get these from their regular diet, though, so the nutritional benefit is minimal. Watermelon is best seen as a cool, low-calorie treat.
If you’re worried about your cat’s hydration, wet food and a pet water fountain help much more than fruit.
Fact 3: Seeds Should Be Removed
Can Cats Eat Watermelon Seeds?
It’s best to remove all seeds before sharing:
- Black seeds (mature seeds) are hard and can cause choking or, in rare cases, contribute to an intestinal blockage in a small cat.
- White seeds (immature seeds) are softer and less risky, but it’s still safest to take them out.
Choosing seedless watermelon makes this easy. If your cat swallowed a seed or two, there’s usually no cause for alarm. Just watch for vomiting or constipation.
Fact 4: The Rind Is Hard to Digest
Can Cats Eat Watermelon Rind?
The green rind isn’t toxic, but it’s tough, chewy, and difficult for cats to digest. Eating rind can lead to:
- Vomiting
- Diarrhea
- Constipation
- A choking risk from large pieces
Only offer the soft red flesh and keep the rind in the trash where your cat can’t reach it.
Fact 5: Portion Size Matters
Even healthy treats can cause problems in large amounts. Watermelon contains natural sugar (about 6 grams per 100 grams), and too much can upset your cat’s stomach.
A safe serving for most adult cats is one or two small cubes, about half an inch each, occasionally. Stick to the 10% treat rule: treats should never make up more than 10% of your cat’s daily calories.
How to Serve Watermelon to Your Cat Safely
1. Choose ripe, fresh watermelon. Avoid anything that’s fermented or old.
2. Remove all seeds and the rind.
3. Cut into small cubes about half an inch in size.
4. Offer one piece first and watch for any reaction.
5. Serve it plain. No salt, sugar, or chili seasoning.
Summer tip: On a very hot day, you can freeze a small cube and let it thaw slightly. Make sure it’s soft enough to chew safely.
Can Cats Eat Watermelon Safely Every Day?
It’s better not to. Daily fruit adds sugar and may cause loose stools. Once or twice a week is a reasonable limit for a cat that enjoys it.
Can Dogs and Cats Both Eat Watermelon?
Yes. Watermelon is safe for both dogs and cats when seeds and rind are removed. Dogs can usually have a few more pieces because of their size. The safety rules are the same for both.
Watermelon vs. Other Fruits for Cats
How does watermelon compare to other cat-safe fruits?
- Watermelon: very high water content, low calories, low sugar per bite
- Strawberries: low in sugar, but fibrous. Remove the leaves first.
- Bananas: higher in sugar and calories, so smaller portions are needed
- Blueberries: small and low-calorie. Cut in half to prevent choking.
- Cantaloupe: many cats like its smell. Remove the rind and seeds.
Watermelon is one of the best choices for a hot day because it’s hydrating and low in calories.
Keep Your Cat Cool the Smart Way
If you’re giving watermelon to help your cat beat the heat, add a few other cooling tips:
- Keep fresh, cool water available in several spots around the house.
- Offer wet food, which contains much more moisture than dry food.
- Give your cat access to shaded, cool rooms and tile floors.
- Never leave your cat in a hot car or a closed, sunny room.
Signs of overheating include panting, drooling, red gums, and weakness. Overheating is an emergency, so contact your vet right away if you see these signs.
Watermelon Products to Avoid
- Watermelon candy and gummies: sugar and artificial sweeteners
- Watermelon juice or drinks: concentrated sugar
- Watermelon sorbet or ice cream: sugar and dairy
- Fruit salad: may include grapes, which should be kept away from pets
For a full list of foods to keep away from pets, check the ASPCA’s list of people foods to avoid.
When to Skip Watermelon
Don’t share watermelon if your cat:
- Is diabetic or overweight
- Has a sensitive stomach or ongoing digestive problems
- Is a young kitten
- Is on a special prescription diet
If you’re unsure, ask your vet. The Cornell Feline Health Center is also a helpful resource for cat nutrition questions.
Other Cat-Safe Fruit Treats
Looking for more cat-friendly snacks? Check out our guides on whether cats can eat strawberries and whether cats can eat bananas. If you want a crunchy option for movie night, read can cats eat popcorn.
In Short
Can cats eat watermelon? Yes. A few small, seedless cubes of watermelon flesh make a refreshing and safe summer treat for most healthy cats. Always remove the seeds and rind, keep portions small, and serve it plain. Your cat’s everyday nutrition should still come from a complete, meat-based cat food.
Frequently Asked Questions
Is watermelon good for cats?
It’s safe and hydrating in small amounts, but it isn’t necessary. Cats get their nutrients from meat-based cat food.
Can kittens eat watermelon?
It’s best to wait until adulthood. Kittens have sensitive stomachs and need nutrient-dense kitten food.
What happens if my cat eats watermelon rind?
It may cause vomiting, diarrhea, or constipation. Watch your cat, and contact your vet if symptoms last more than a day.
How much watermelon can a cat eat?
One or two small, half-inch cubes of seedless watermelon, occasionally, is enough for a healthy adult cat.
Why does my cat love watermelon?
Cats can’t taste sweetness, so they’re probably drawn to its cool, juicy texture and high water content.
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