Dogs have taste buds that can detect the sweetness, sourness, and bitterness of food. However, since the dog's wolf ancestors ate mostly wild meat with high salt content, taste receptors for saltiness never developed as well as other canine taste buds. Dog owners who have ever given their dog a sweet-tasting snack know how much their dog loves those snacks. But should a dog be given sweet fruit like blueberries? Although blueberries are considered a healthy "superfood" for humans, is it safe to give a dog blueberries?
Blueberries contain antioxidants, fiber, and other phytonutrients beneficial to a dog's general health. They do not contain substances toxic to dogs found in chocolate or raisins. So, yes, it is safe to give a dog blueberries--but only in moderation. Limit the number of blueberries a dog eats to a small handful every few days as a treat. The problem with allowing a dog to eat as many blueberries as they want involves their gastrointestinal system. Diarrhea, an upset stomach, and vomiting are symptoms that a dog may have eaten too many blueberries.
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