Yes, dogs have sweat glands, but they are different from humans and serve various functions. Dogs possess two types of sweat glands: merocrine and apocrine glands. Merocrine glands, found in the paw pads, actively produce sweat to help cool the body down when a dog is hot. This is why you might notice wet paw prints from a dog on a warm day. Apocrine glands, however, are located all over the dog's body and do not contribute to cooling. Instead, they release pheromones that play a role in social and territorial communication among dogs.