They belong to the family of rodents (rats) and these water rats have large webbed feet, flat broad tail, and thick waterproof coat that allow them to glide smoothly through water.
His nose and ears close on reflex when submerged under water preventing him from choking. This is because of a special valve they have in their nose and ears that allow them to dive into deeper waters for longer periods.
Beavers are famous for collecting debris to build pool,s which are their habitat. The beaver’s tail allows him to balance his weight when he’s towing these heavy logs up and down.
Beavers can spend long winters in these lodges they have built, even below a layer of ice, because they can eat underwater. Their lips close behind their front teeth, allowing them to chew on food, without letting water in their mouths.
They can also stay underwater for long periods because they have slow blood circulation, big lungs, and a huge liver that stores oxidized bloody. These unique mechanisms allow them to conserve oxygen.
Their strong chisel shaped teeth gives them the ability to cut down trees. This gives them a steady supply of leaves, bark, and buds, food that they can obtain without having to cut the entire tree down.
Their waterproof coat protects them from the cold, by keeping their skin dry and warm even when they are in cold water. The beaver produces castor oil from a pair of little glands near its tail. He rubs this oil regularly on himself with his split toenail, which allows him to stay warm and dry by keeping him waterproof.
Their webbed hind feet give them strength when swimming for long distances, while their front feet act like hands.