Animals are divided into cold-blooded animals and warm-blooded animals. We all know that cold-blooded animals generally hibernate, but there are also many warm-blooded animals in our nature who hibernate, such as bears, hedgehogs, drought, laziness and so on. They are typical warm-blooded animals and hibernate even when they go. So someone wants to know whether reptiles hibernate? Why do bears in mammals hibernate? Because bears can't find enough food to maintain basic activities in winter, they choose hibernation to reduce energy consumption, so they can spend the whole cold winter.

We all know that bears are big and generally vegetarian. However, in the cold winter, they will have little food. If they insist on foraging in winter, their own energy consumption will be greater than the energy obtained by looking for food, which is not enough to maintain basic survival. So they learned to hibernate in the process of evolution, keeping their energy consumption to a minimum, so as to survive in the cold winter.

Bears can't hibernate, but because they can't find enough food to maintain their basic life, they have to hoard fat before winter comes. Like other cold-blooded animals, bears need enough energy to maintain their body's needs, eat a lot of food and hoard fat to keep enough fat for winter consumption, otherwise they will starve to death.

In fact, many warm-blooded animals hibernate to survive, so we don't have to think that only cold-blooded animals hibernate, because sleeping can minimize their energy consumption, so as long as they have enough food to supplement before hibernation, they won't starve to death. Of course, many animals in nature leave this world in the cold winter because they don't have enough food to hibernate. So our warm-blooded bears also need to hibernate for the winter.