Why are dogs not afraid of the cold when they sleep outside in winter?

This animal can sleep outside in winter and is not afraid of the cold. The main reasons include the warmth of hair, the protective effect of fat layer, the strong cold resistance and thermoregulation ability of special species.

1, hair to keep warm: the dog's body surface has a thick layer of hair, which can block most of the cold outside.

2, fat layer protection: Some breeds of dogs can increase the thickness of subcutaneous fat in winter, thus providing themselves with an extra warm layer.

3. Special breeds have strong cold resistance: Some breeds of dogs, such as sled dogs, Siberian huskies, search and rescue dogs and Samoyed dogs, have adapted to the low temperature environment.

4, body temperature regulation ability: the dog's body has a certain body temperature regulation ability, you can adjust your body temperature according to the external temperature.

It should be noted that although some dogs can survive in cold weather, if the temperature is too low or the wind is too strong, they may still freeze to death. If the weather is too cold, you should still put the dog indoors and make sure it has enough warm measures.