What are the ecological features of tundra animals?

The peculiarities of the animals of the tundra are due to the harsh climatic conditions. 1. To warm the body, animals have thick fur, and birds have down and feathers. 2. Even the limbs are thickly insulated and have a wide base. This allows you to move around on snow and ice. 3. By the onset of winter, subcutaneous fat increases. 4. Most of the animals and birds of the tundra are white in color. This helps them hide from enemies. 5. There are no animals in the tundra that hibernate. 6. In search of food, they lead a nomadic lifestyle. 7. Due to lack of food, the inhabitants of the tundra are not picky about food.