Watermelon can be a good treat choice for many dogs because it is naturally low in fat and high in water. Its water content can help add variety and hydration to snack time, while its natural sweetness makes it appealing to many pets.

While watermelon contains nutrients such as vitamin C and antioxidants, dogs should get all of their daily nutrition requirements from a dog food that is complete and balanced for their life stage, size and activity level. Fruit should only be used as an occasional snack or enrichment treat, not as a major part of your dog's diet.

As with any treat, moderation matters. Watermelon and other fruit, like strawberries, can be a healthy snack in moderation when served safely. The key is to keep portions small and make sure treats are just one small part of your dog's overall diet.

Too much watermelon can cause stomach upset, including loose stool or diarrhea, because of the fruit's natural sugar and water content. Start with a small amount to see how your dog handles it before offering more. If your dog has vomiting, diarrhea, lethargy or signs of discomfort after eating watermelon, stop feeding it and contact your veterinarian.