Dogs come in all sorts of shapes and sizes and colors. ... Most have black or pink noses, but some dogs have brown or liver-colored noses. In fact, the exposed skin on dogs, even the skin under their fur, can vary in color.

Why is my dog's nose brown?

Tyrosinase is an enzyme present in animal tissue. It catalyzes the production of melanin and other pigments. As you may have guessed, it present in your dog's nose and is thought to be temperature-sensitive. When it is cold, tyrosinase breaks down which is why your dog's nose turning brown.

What breed of dog has a brown nose?

Lagotto Romagnolo. Have you ever heard of this dog breed? It is a breed from Italy, and they have the most gorgeous brown noses! These dogs are often used to sniff out truffles.