Smart animal(Edit)

One of the surprising animal behavior is construction skills that some animal build houses or nests by themselves. Not only do human beings build their houses but also some animals do so. For instance, birds nest on a tree or branch. Also, rabitts, snakes, and ants dig holes to live under the ground.

A smart animal I would like to discuss is a sea otter. They prefer cold place to live, like Alaska, Canada, and Beiring strait. They live in the sea where water temprature degree is from 2 to 12 celcius. Moreover, Sea otters build their nests built by peaces of trees or branchs on the water by themselves. It is incredibly great construction even for people's standard. Although human being use tracks or cars when they bring blocks and cements, they gather pieces of trees or branches without any vehicles and tools. They are professional architect on the water.