Scientis discovered why dog nose is always wet! Without "wet nose" dog sense of smell wouldn't be so perfect. Comparing to human dog has thousand of times more smell cells. However this is not the only reason why dogs have so good sense of smell. Team of Brent Neven from University in Pensylwania important thing is also... catarhh. It is filtering air that dog is absorbing.
PS. I recently watched movie "Bolt" about dog. Funny film :)
