When winter comes, some bears will find an appropriate place for themselves, then they will fall into a deep sleep without eating or drinking. Bear hibernation may last around 6 months in some areas.

During this era , they're going to consume their own fat for a living. so as to reduce energy consumption, they're going to reduce their metabolism. For example: black bears can reduce their heartbeat from 55 beats per minute to 9 beats per minute, breathing From the first 6-10 times per minute to about 1.

The blood heat will also be lower than usual, but not too low. Under these measures, the metabolic level of the black bear dropped to 1/4 of its usual activity.

In order to reduce consumption as much as possible, black bears will go to sleep throughout the winter, therefore the question is, if there are predators who find them at this point , will they be attacked by predators?

Hibernating bear.

Bears hibernate a bit like snakes, but bears and snakes hibernate for various reasons. Snakes hibernate because snakes cannot regulate their blood heat and can only follow the changes in the outside temperature.

When the surface temperature is lower than 15 degrees Celsius, the enzymes in their bodies are going to be difficult to participate in the reaction, which can make it difficult for them to move.

Find a secure place to hibernate. This also results in the fact that snakes have no ability to fight back during hibernation, which also makes snake catchers in some places concentrate on catching snakes in winter.

Unlike snakes, bears are warm-blooded creatures that produce their own energy to take care of their body temperature, in order that they can move freely even in winter. However, bears are omnivores, and a few bears eat 60% plants and only 40% meat (polar bears have a much higher proportion of meat).

In the cold winter, the extremely coldness can cause the plants to wither and be covered with snow.

Animals will either hibernate in cold seasons, like squirrels, or migrate to other places, or freeze to death. This makes it difficult for bears to catch enough food within the cold season, and so as to save energy, they need to hibernate during the long winter.

Not all bears enter hibernation, though. Bears stay active in winter if food is out there or the temperature is warm.

Do hibernating bears have the power to fight back?

If you're lucky enough to find a place where the bear hibernates in winter, then you want to not make a sound to alarm it, the simplest way is to run away before it wakes up. this is often because although bears hibernate, bears are still conscious and alert during hibernation, and that they can wake up as soon as possible in case of emergency during hibernation.

In the places where black bears and brown bears live, there also are large carnivorous tigers, and tigers have a habit of preying on bears since past . The researchers analyzed the animals eaten by tigers and located that tigers prey on brown bears and black bears, with 1.2% of brown bears and 1% of black bears.

In addition, brown bears have also preyed on tigers.

According to the current actual record, which is more powerful between bears and tigers, there's no difference between them. It are often summed up in one sentence.

They feed on each other and compete with each other. However, in terms of character, tigers feed on brown bears more frequently, but they are doing not kill them when they see them. When food is sufficient, tigers aren't willing to take such a big risk to provoke brown bears.