Beavers are aquatic rodents known for their precious fur and dam building skills. Beavers like to live by the river and have their homes on the edge of forests and lakes. Their dams made of branches, stones and clay can last for years.

Beavers have a strong ability of division of labor and cooperation and never care about each other. In case of danger, it will use its tail to flap the water to inform other beavers, and then dive into the water together. The beaver's nest is built by the river. Usually, the beaver builds the hole under the water, and most of the area of the hole is above the water level, so that the water can protect its hole from enemies on the ground.

Source: @peterheinrisch