Can dogs eat watermelon?
Updated 5 August 2026
Yes. Watermelon flesh is safe for dogs and is around 92 percent water, which makes it a good warm-weather share. The rind and a pile of seeds are the problems, so serve deseeded chunks of the pink flesh only and keep the portions sensible.
The detail
Watermelon is one of the easiest fruits to share. The pink flesh is about 92 percent water and only around 6g of sugar per 100g, which is less than half the sugar of mango.
That makes it a favourite on hot days, when a few cold chunks do a small hydration job alongside the water bowl. It never replaces the water bowl, but it is a treat with an actual point in July.
Everything risky about watermelon sits in the parts you would not eat yourself. The rind can upset the stomach or block the gut, and a heap of swallowed seeds can do the same in a small dog.
What is in 100g of watermelon flesh
| Water | Around 92gThe point of the treat |
| Sugar | Around 6gLess than half the sugar of mango |
| Calories | Around 30 |
| Anything toxic to dogs | Nothing in the fleshRind and seed pile are blockage risks, not poisons |
How much is sensible
| Dog size | Sensible amount |
|---|---|
| Small (under 10kg)Chihuahua, Jack Russell | Two or three small deseeded cubes |
| Medium (10 to 25kg)Cocker spaniel, border collie | A handful of deseeded chunks |
| Large (over 25kg)Labrador, German shepherd | The flesh of a small wedge, rind removed |
| Diabetic dogs | Skip it. Cucumber has the same crunch and water without the sugar |
Can dogs eat watermelon skin?
No, and this is the most searched watermelon question for a reason: the rind is the bit dogs steal from picnic plates and bins. The tough green skin and the firm pale layer under it digest badly.
A gnawed rind usually means an upset stomach at worst, but swallowed chunks can block the gut, and Vets Now flags melon rind as a blockage risk. If a chunk of rind goes down whole, watch for vomiting or straining and ring your vet if either appears.
Watermelon seeds
A few black pips swallowed with the flesh will pass through without trouble. The problem is quantity: a small dog working through a seedy wedge can collect enough seeds to block its gut.
Seedless varieties, which is what most UK supermarkets sell anyway, make the whole question disappear. If you have a seeded one, flick the mature black seeds out before sharing.
Frozen watermelon cubes for summer
The best version of this treat. Cube the flesh, remove any seeds, freeze the cubes on a tray, and hand them out one at a time on hot afternoons.
Cold chunks take longer to eat and add a little water on days when your dog needs it. Keep cubes small for little dogs, since frozen fruit is hard enough to crack a tooth in an enthusiastic chewer.
Can puppies have watermelon?
Yes, in smaller amounts than the table above. A cube or two of deseeded flesh is a good soft treat for a weaned puppy, and the water content makes it gentler than most fruit.
Be stricter about seeds and rind than you would be with an adult dog. A puppy's gut is narrower, so the blockage threshold is lower.
Common questions
My dog ate watermelon rind. What should I do?
Watch for the next day or two. Small gnawed bits usually pass with nothing worse than a loose stool, but vomiting, straining or refusing food after a swallowed chunk means a call to your vet.
Are watermelon seeds poisonous to dogs?
No, the issue is physical rather than chemical. A few pips pass through fine, while a large number can block a small dog's gut, so deseed or buy seedless.
Can dogs eat watermelon every day in summer?
A few cubes on hot days is fine for a healthy dog. Treats of any kind should stay within about a tenth of daily calories, and fresh water does the real hydration work.
Can diabetic dogs have watermelon?
Skip it. Even at around 6g of sugar per 100g the sugar is the thing their condition manages, and cucumber does the same job with almost none.
Can dogs eat other melons like honeydew or cantaloupe?
Yes. Vets Now lists the flesh of all the common melons as safe for dogs, with the same rule about binning the rind.
Is watermelon good for dogs?
It is a harmless treat with a genuine summer use, rather than a health food. The vitamins are already covered by a complete dog food.