You may have heard of a "spitz" dog before, but what does "spitz" mean? It's not a breed, and it's not a group the way organizations like the American Kennel Club or Westminster Kennel Club recognize groups. "Spitz" is a dog type describing several breeds that share loosely common ancestry and traits. Physically, spitz dogs typically have thick and dense fur, pointed ears and muzzles, and puffy tails that curl up and over their rears. They descend from ancient breeds that came from Arctic regions, although today's spitz dogs were developed all over the world. Read on to learn the histories behind 10 of the most popular spitz dog breeds.