Why do animals in cold countries have thick fur?

Animals in cold countries have furs in their body surface and fat layer below the skin to prevent heat loss from the body. This is important to keep their body warm in the cold environment. Furs and fat layer act as insulators which do not conduct heat and thus heat is not allowed to escape from the body.

1. Why do some animals have thick fur?
2. Why do animals in cold climate have thick and long hair?
3. What has thick fur to protect them from the cold?

Why do some animals have thick fur?

In especially cold environments, terrestrial mammals such as the musk oxes, arctic foxes and polar bears rely on their thick coats to stay alive in frigid temperatures; dense fur traps a layer of air close to their skin, which helps to keep them warm.

Why do animals in cold climate have thick and long hair?

Small appendages that are close to the body stay warm and resist frostbite compared to having large ears or long tails. Thicker coats of either fur or hair grow in to act as an additional layer of insulation.

What has thick fur to protect them from the cold?

Thick Fur.

Except for the tip of the nose, polar bears are entirely covered in fur. They have a very thick undercoat, which is even denser than the coats of other bears, as well as longer guard hairs. This insulates them from the cold, even when they are in water.