Can dogs breathe through their nose?

Dogs have no sweat glands and when they are hot or when their heart rate is elevated they will disperse the body heat by hanging out their tongue to pant. Yes, dogs breathe through their noses but not all the time. Like humans dogs breathe both through the nose and the mouth. read more

A dog breathes through the nose as by doing so they can sniff not only interesting smells but they can also track and scent a prey. Because of this ultrasensitive sense of smell, dogs are predisposed to breathing through their noses when sleeping. read more

Although a dog is able to breathe through his mouth, he typically breathes through his nose. The most common occurrence of mouth breathing in a dog is when he is panting. Certain illnesses sometimes prevent a dog from breathing through his nose because of blocked nasal passages. read more

Really it depends on the individual dog (not the size of dog) and the dog's personality, what it has done wrong, etc. read more