Beavers use an impressive amount of skill, ingenuity and physical labor to build dams. Take a closer look at these prolific engineers.
Beaver incisors are perfectly adopted for cutting. They are strengthened with iron which makes them orange. The incisors grow continuously and even self-sharpen. A popular way for beavers to bring down a tree is to slice halfway through the tree and then let the wind do the rest. Beavers use stones to weigh down the base of the dam. The whole family works together to carefully interlock the timber, and they dredge mud from the pond bottom to seal the dam.