-- nocturnal, twig, deciduous, canal, keen, conservationist, lodge, shirub, exterminate
The young act as apprentice builders learning the tricks of the trade.
They gnaw through bark to eat the sugary layer underneath.
They dredge mud from the pond bottom to seal the dam. Each pond trap several inches of sediment every year. So there's plenty of it.
Felling trees with your teeth takes great strength, skill and patience.
The beaver's incisors are strengthen with iron which makes them orange. They grow continuously and even self sharpen.
The whole family works together carefully interlocking the timber.
keystone species ⪢⪢
Beavers are keystone species wielding an oversized influence on their surroundings. They build dams which filter water, flood rivers and create crucial wetlands.
Beavers are easily recognized by their broad flat tails and are well known for the dams and lodges they construct.
The pond makes it easier to move around the heavy logs they need to build the dams. Out of the water it's a struggle.
In the Rocky Mountains beaver dams slowly filter billions of tons of water. The ponds build up soil and nutients and help prevent floods and droughts.
The largest rodents in North America and the second largest rodents in the world, beavers are semi-aquatic mammals.
And they cut back trees and bushes opening up forest canopies and promoting the growth of heavy underbrush which provides a safe haven for many other animals.
Semi-aquatic means that they live in the water part of the time and on land part of the time.
One technique is to slice halfway through and let the wind do the rest.