On a hot afternoon, a dog sitting next to you while you eat watermelon is hard to ignore. Good news: watermelon is one of the safest fruits you can share. You just need to deal with the seeds and the rind first.
Yes, dogs can eat watermelon. The pink flesh is a safe, low-calorie, hydrating treat for most dogs in small amounts. Remove the seeds and the rind first, because both can upset the stomach and, in larger amounts, block the intestines.
Is watermelon good for dogs?
Watermelon is mostly water, roughly 90% by weight, which makes it light and refreshing. It also contains vitamins A and C, some potassium, and lycopene, the pigment that makes it pink. The AKC lists watermelon among the fruits dogs can eat and notes its high water content.
The practical benefits:
- Low in calories. UC Davis lists 1/2 cup of diced watermelon at about 23 calories, so it stretches a long way as a treat.
- No fat, no salt. A much better summer reward than burgers or hot dogs off the grill.
- Refreshing. Cold or frozen cubes are a nice way to cool down after a walk.
A dog on a complete and balanced food doesn't need watermelon for its vitamins. It's a better treat, not a health food. Our guide to fruits dogs can eat puts watermelon in the plain "yes" group, with the seeds and rind as the catch.
Risks of feeding watermelon to dogs
Watermelon flesh is not toxic to dogs. The problems come from the parts around it and from eating too much.
Seeds. The hard black seeds in a regular watermelon aren't toxic, and one or two swallowed by a large dog will most likely pass. But a mouthful of seeds, especially in a small dog, can cause an intestinal blockage. Seedless watermelons still have small, soft white seeds; these are generally considered fine, but removing what you can costs nothing.
Rind. The green rind is tough and hard to digest. Chewing on it can cause vomiting and diarrhea, and a swallowed chunk can get stuck in the intestines. Don't hand your dog a slice to gnaw on.
Too much at once. All that water and natural sugar can cause diarrhea if your dog eats a lot. Our fruit guide flags watermelon as one of the fruits that can upset the stomach when you overdo it.
Sugar. Watermelon is low in calories, but most of those calories are sugar. That matters for diabetic or overweight dogs.
Choking. Large chunks can lodge in the throat of a dog that gulps. Cut cubes to a size that suits your dog.
Watermelon products. Watermelon candy, gum, flavored drinks, sorbet and fruit salads with grapes are not dog-safe. Sugar-free gum and candy can contain xylitol, which is dangerous for dogs even in small amounts.
How much watermelon can a dog eat?
Treats should stay under 10% of your dog's daily calories, with the rest coming from a complete and balanced food. Watermelon is low in calories, so with this fruit the stomach usually sets the limit before the calorie count does.
These are rough guides for a healthy adult dog, using 1-inch (2.5 cm) cubes of seedless flesh, about 5 calories each:
| Dog size | Example breeds | Watermelon per day, as a rough guide |
|---|---|---|
| Extra-small (under 10 lb) | Chihuahua, Maltese | 1 to 2 small cubes, cut smaller |
| Small (10 to 25 lb) | Jack Russell, Shih Tzu | 2 to 4 cubes |
| Medium (25 to 50 lb) | Border Collie, Cocker Spaniel | 4 to 6 cubes (about 1/2 cup) |
| Large (50 to 90 lb) | Labrador, Dalmatian | 6 to 10 cubes (up to about 1 cup) |
| Giant (over 90 lb) | Bernese Mountain Dog, Great Dane | Up to about 1 1/2 cups |
Start at the low end the first few times to see how your dog's stomach handles it. The dog treat calculator gives your dog's exact treat budget from weight and activity.
How to prepare watermelon for dogs
- Wash the outside before you cut, so dirt on the rind doesn't end up on the flesh.
- Cut away the rind, including the pale green-white layer.
- Remove the seeds. Seedless watermelon saves time; pick out any black seeds you see.
- Cube it to a size your dog can't swallow whole.
- Serve fresh, chilled or frozen.
Frozen watermelon ideas:
- Freeze seedless cubes on a tray, then keep them in a bag for hot days.
- Blend seedless watermelon, pour it into an ice cube tray and freeze. Give one or two cubes at a time.
- Mix a little watermelon puree with plain, unsweetened yogurt and freeze it in a lick mat or chew toy. Count the yogurt in the treat budget too.
Frozen treats are hard, so give small pieces or let them soften slightly for small dogs and puppies.
Can puppies eat watermelon?
Yes, small seedless pieces without rind are fine for puppies eating solid food. Their stomachs can be sensitive, so start with one or two tiny cubes. Most of their diet has to come from a complete and balanced puppy food.
Dogs with health conditions. Ask your vet first if your dog has:
- Diabetes: watermelon is mostly sugar and water, which can affect blood glucose control.
- Obesity: watermelon is a low-calorie swap for richer treats, as long as total treats go down.
- Pancreatitis or a sensitive gut: it's fat-free, but these dogs often do best on a strict diet with no extras.
- Kidney disease: many of these dogs are on a prescription diet and a managed fluid plan; check before adding anything.
Watermelon in other forms
Can dogs eat watermelon seeds?
Not on purpose. A few swallowed seeds are unlikely to hurt a medium or large dog, but many seeds can cause a blockage, especially in small dogs. Use seedless watermelon or pick the seeds out.
Can dogs eat watermelon rind?
No. The rind is hard to digest and can cause vomiting, diarrhea or a blockage. Cut it off before sharing, and keep discarded rinds out of the trash where your dog can reach them.
Can dogs eat frozen watermelon?
Yes. Frozen seedless cubes make a good summer treat. Keep the pieces small, and give fewer than you would of fresh watermelon if your dog tends to gulp.
Does watermelon help keep dogs hydrated?
It adds a little water, but it doesn't replace a full water bowl. A few cubes is a small amount of fluid compared with what a dog drinks in a day. On hot days, fresh water, shade and avoiding the hottest hours matter far more. See how much water your dog needs and check whether it's too hot to walk your dog before heading out.
Can dogs drink watermelon juice?
Freshly blended, seedless watermelon with nothing added is fine in small amounts. Store-bought watermelon juice and drinks often contain added sugar or other fruits, so skip those.
Can dogs eat pickled watermelon rind, watermelon candy or sorbet?
No. Pickled rind adds sugar, vinegar and spices, and candy and sorbet are mostly sugar. Sugar-free versions may contain xylitol. If your dog ate something with xylitol, use the xylitol toxicity calculator and call your vet right away.
What to do if your dog ate the rind, lots of seeds or too much watermelon
Ate too much flesh. Expect loose stool or some vomiting for a day at most. Offer water, skip treats for a day and watch.
Ate rind or a lot of seeds. A small piece of rind or a few seeds usually passes. A larger amount, especially in a small dog, can cause a blockage. Call your vet if you see:
- repeated vomiting or retching
- not eating
- a painful, bloated belly or a hunched posture
- straining with little or no stool
- lethargy
Ate a watermelon product. Check the label for xylitol, grapes or raisins (common in fruit salads), or chocolate. If any are listed, call your vet, an emergency clinic or the ASPCA Animal Poison Control Center at (888) 426-4435 (a fee may apply). You can look up other ingredients in our toxic to dogs checker.
FAQ
Can dogs eat watermelon every day?
A few cubes a day is fine for most healthy dogs, as long as all treats together stay under 10% of daily calories. If you see loose stool, cut back.
Is seedless watermelon safe for dogs?
Yes. Seedless watermelon is the easiest option. The small, soft white seeds are generally considered fine, though you still need to remove the rind.
Can watermelon give dogs diarrhea?
Yes, if they eat too much. The high water and sugar content can loosen stool. Stick to the portion guide and introduce it slowly.
Can dogs eat cantaloupe or honeydew too?
Yes, the flesh of cantaloupe and honeydew is generally safe in small amounts, without the rind or seeds. They're a bit higher in sugar than watermelon, so keep portions small.
Is watermelon good for dogs on a hot day?
It's a refreshing treat, but it won't prevent heatstroke or replace water. Keep fresh water available, give shade, and avoid walks in the hottest part of the day.
The bottom line
Watermelon is a light, hydrating summer treat that most dogs love. Cut off the rind, remove the seeds, cube it to your dog's size and keep portions small. Frozen cubes are a great hot-weather snack, but they don't replace fresh water and shade. Skip candy, sorbet and sugar-free watermelon products, and ask your vet first if your dog has diabetes or another condition that needs a strict diet.
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