Spitzes are well suited to living in harsh northern climates. They often have an insulating, waterproof undercoat that is denser than the topcoat to trap warmth. Small, upright ears help to reduce the risk of frostbite, square proportions and thick fur that grows on the paws protects the dogs from sharp ice. Many spitz breeds, like the Japanese Akita and Chow Chow, retain wolf-like characteristics like independence, suspiciousness, and aggression towards unfamiliar humans and other dogs, and they require much training and socialization when they are puppies before they become manageable in an urban environment. Some, such as the Karelian Bear Dog, are more difficult to train as companion dogs. Some breeds, such as the Pomeranian, have manes. Several spitz breeds (such as huskies) are bred for one purpose only. However it is common for many spitz breeds (such as the Russian laikas) to be general purpose dogs in their native lands, used for hunting, hauling, herding, and guarding.
