Why dogs, like Maltese, are constantly liking their nose ?
Like any good dog knows, that one good turn deserves another, so does a lick. :)
To keep it wet! If its dry that usually means they're sick
to keep it wet
the Nose is one of their main senses..gotta keep it clean and working ...just like a bird has to bath several times every day..to keep their wing working...
Constant licking can be a symptom due to stress. Exercise and lots of attention might help to reduce this behaviour.