The reasons why sled dogs are not afraid of the cold when sleeping in the snow:

1. Sled dogs come from polar regions. Before humans kept them as pets, they had been living in extremely cold conditions. environment, so they are more tolerant of cold than other dogs. In theory, sled dogs can withstand environments of minus 20 to 30 degrees Celsius.

2. Sled dogs have very thick fur and strong bodies. For example, the back hair of the Siberian Husky is double-layered, medium in length, and very dense, so it is not afraid of the cold.

3. The sled dog is not afraid of the cold because its sweat glands are not very developed, so it dissipates heat slowly, which can provide it with a good insulation effect.

Methods to keep dogs warm:

1. If the dog is kept indoors, the breeder can buy it a kennel for winter use. You can keep your dog warm by the fire.

2. If the dog is raised outdoors, the breeder needs to prepare a strong, warm, and windproof nest for the dog, but the outdoor weather must also be observed frequently. If extreme weather occurs, the dog must be removed as soon as possible. Dog moved indoors.

3. For dogs whose hair is too short or light, the owner can also put clothes on it, which can have a certain effect of keeping warm.

4. When the temperature is low, you can stop feeding your dog cold food and drinking ice-cold water. You should also feed your dog more high-protein food in daily life, which can help your dog increase its resistance.