Can Dogs Eat Watermelon? Rind, Seeds and Portions

Yes, dogs can eat seedless watermelon flesh as a hydrating summer treat. Remove the rind and every seed, serve small cubes, and keep it within the 10% treat limit. Watermelon is about 92% water and only 30 kcal per 100 g, but the rind and seeds can cause blockages and stomach upset.

Watermelon is one of the lightest fruits you can share with a dog, and plenty of dogs go wild for a cold cube on a hot day. The flesh is fine. The risks are in the parts most people toss: the rind and seeds, plus the temptation to let a dog eat too much. Check other foods in our food safety checker.

Is watermelon good for dogs?

Watermelon flesh contains about 30 kcal and 6-8 g of sugar per 100 g, and is roughly 92% water. It also provides:

• Vitamin A and vitamin C in small amounts.
• Potassium and a little magnesium.
• Lycopene, the antioxidant that makes red watermelon red.
• Citrulline, an amino acid.

It has very little fiber, so a big serving is mostly water and sugar. It's a nice cool treat, but nutritionally it's a bonus, not a need.

Watermelon and hydration: a caution

A cold cube helps a dog cool down and feel refreshed, but it isn't a fix for heat stress and never a replacement for drinking water. Always provide fresh water in hot weather. If your dog is panting heavily, drooling, weak, vomiting or collapsing in the heat, that's an emergency. Move the dog to shade, start gentle cooling with cool (not ice-cold) water and get to a vet immediately. Check conditions with the dog heat safety calculator.

Rind and seeds: why to skip them

• Rind: tough, fibrous and difficult to digest. Large pieces can cause vomiting, diarrhea and, in small dogs, a blockage. The thin green skin can also carry dirt and pesticide residue.
• Seeds: a few seeds in a large dog are unlikely to cause harm, but many seeds can accumulate and cause a blockage, particularly in small dogs. Choose seedless melon or remove the seeds by hand. Even seedless varieties can have small, pale seeds, so check.

How much watermelon can a dog eat?

Treats should stay around 10% of daily calories. A half cup of diced watermelon (about 76 g) has roughly 23 kcal, so calories are small, but the water and sugar can loosen stool.

Start with a couple of cubes. If your dog gets diarrhea or gas, cut back or skip it next time.

Worked example

Meet Lola, a neutered 12 kg (26 lb) dog.

1. RER: 70 × 12^0.75 = 70 × 6.45 = about 451 kcal.
2. Daily calories at 1.6 × RER: about 720 kcal.
3. Treat allowance at 10%: about 72 kcal.
4. Half a cup of diced watermelon (about 76 g): 76 × 0.3 = about 23 kcal.
5. Result: about a third of her treat allowance, leaving roughly 49 kcal for other treats.

Since watermelon has so few calories, it's a good choice for a dog on a diet. Work out your dog's budget with the dog calorie calculator.

Serving ideas

1. Cubes: deseed and dice, then serve cold.
2. Frozen cubes: freeze on a tray, then bag them for summer.
3. Blended ice cubes: puree seedless flesh and freeze in an ice tray.
4. Stuffed toys and lick mats: mash a spoonful into a rubber toy.
5. Watermelon "pupsicles": blend with a spoonful of plain, unsweetened yogurt if your dog tolerates dairy.

Skip watermelon-flavored candy, gum or sweets, and anything labeled sugar-free, which may contain xylitol. Watermelon cocktails or anything containing alcohol are dangerous for dogs.

Who should be careful?

• Dogs with diabetes: the sugar needs vet input.
• Dogs with sensitive stomachs or diarrhea: the water and sugar can make it worse.
• Small dogs: tiny seeds and rind pose higher blockage risks.
• Puppies: a few cubes are fine, but a complete puppy food should make up nearly all the diet.

When to call your vet

Call your vet if your dog ate a lot of rind or seeds, or shows repeated vomiting, belly pain, no stool or lethargy. If your dog is overheating, seek emergency care right away. For suspected toxic ingestion: ASPCA Animal Poison Control Center, 888-426-4435; Pet Poison Helpline, 855-764-7661.