Dogs' noses secrete a small amount of mucus which serves two purposes: to help their sense of smell, and to keep themselves cool.
Dogs and cats noses can be dry or moist. If there are no other signs of illness it is perfectly normal.
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 do sometimes!
they want to be stroked (fussed)