Nose colours

The 'default' nose colour in dogs is black. Dogs that cannot produce black eumenalin (liver, blue, isabella), however, do not have black noses. Theirs follow the shade of the coat. Puppies are generally born with flesh-coloured noses - the pigment comes in as they age.

Nose of black dog	Nose of blue dog
Nose of liver dog	Nose of isabella dog

"Modifiers"

Butterfly nose

Sometimes a dog's nose can have a flesh spot (not to be confused with a dudley or winternose). Then it can be called a butterfly nose. The spot can be placed anywhere on the nose and there can be several of them. It is not uncommon for puppies to have such spots, that go away as the dog grows, but some may remain even when the dog is fully grown. These spots are a form of lack of pigment, so naturally they are more common in this type of colours (such as merle and harlequin).

Dudley nose

Red/cream dogs (in particular the lighter ones) sometimes have dudley noses. This is when the middle of the nose is a fleshy colour.

Winternose

Winternose or snow nose is when, mainly during the winter, the dog's nose gets a flesh spot or stripe. It can look similar to a dudley nose (which, however, remains present all year round)

Flesh nose spots on a sable papillon puppy. This dog grew up to have a solid black nose.