If you look at a dogs nose, there are two slits on the side of the dogs nostrals. So, say a dog is tracking somthing. When the dog breaths in the scent, the slits open, blocking the front of the nostrils. This allows the dog to breath the air back out, though the now open area on the side of the nostrils, with out blowing away the scent in front of him/her.
No, not all dogs have black noses. Some dogs have pink noses, or even white. Some dog's noses are black to keep their nose from getting a sunburn.
Dogs noses are so soft and cute and wonderful in every way!
the way we smell through our noses
No, dogs smell with their noses.
No, this is an old wives' tale. Some dogs naturally have dry noses, while others naturally have wet noses.
to clean it
no
Dogs have cold noses because when they breathe they exhale water vapor through their noses. The vapor condenses on their noses and cools them down, similar how sweat cools down a human's body.
Punishment. Mother dogs will bite their puppies noses when they do something they should not, as nipping to hard when playing with his/her mother, etc.
Dogs' noses secrete a small amount of mucus which serves two purposes: to help their sense of smell, and to keep themselves cool.
Dogs do sometimes!
they want to be stroked (fussed)