Many, but not all breeds of dogs have noses that are naturally moist and cold. Understanding why a dog's nose is wet and cold will help you understand what role this plays in dog health.
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Effects
Dogs use their nose in the natural cooling-down process, as moisture on their nose will keep them cooler, especially on hot days; licking their nose consistently keeps them cooled down.
Considerations
Dogs tend to have cold and wet noses as part of the cool-down equation---keeping their noses moist and cool will keep the rest of them moist and cool as well.
Misconceptions
It has been believed that a wet and cold nose is necessary for dog health, but this is not the case---some dogs have dry and cracked noses, but are still perfectly healthy.
Features
Not every dog will have a moist or cool nose, as some breeds of dogs have naturally dry and even cracked noses.
Warning
A dry or cracked nose is not always a sign of illness; a wet nose is not always a sign of health, but a warm nose may be a sign of fever in a dog and should be checked by a vet.
