Why do dogs always have a wet nose?

Answer by  georgesmith (138)

Dogs rely heavily on their superior sense of smell for information about their environment. In order for these spectacular noses to work well they need to be in a constant wet state. Molecules from the air need to be able to stick to the nose so they can be picked up by the receptors there.

Answer by  Drynose (66)

It helps the dog to sense smell better. Smell receptor can only detected particle in the air after they have been moisten. Thus, wet nose provides better sense of smell.

Answer by  Jolie (1227)

This is something that signals that a dog is in good health and being well taken care of. We as humans have our ways of looking healthy too and this is their way.