Is Sugar Bad for Dogs?

Sugar probably isn’t good for dogs, but just how bad is it? And why should we pay attention to the sugar content of foods and treats that we feed our dogs?

Published: April 7, 2026

Can dogs eat sugar? They can but it isn't a good idea. — Although sugar is not toxic to dogs, just like with humans, too much can be harmful to them. Credit: Ioannis Tsotras | Getty Images

Dogs have a sweet tooth, just like their human companions. With functional sweet taste receptors on their tongues, dogs prefer sugary foods when they’re available. Just as in humans, sugars and starches (carbohydrates that the digestive tract quickly converts to sugar) cause canine blood glucose levels to rise.