Do you know why beaver build houses?

Dam-building is synonymous with beavers, the ultimate aquatic engineers. Using branches from trees they have felled, these large rodents dam lakes to create moat-like ponds of still water where they construct islands known as ‘conical lodges’ out of timber, mud and rocks.

The body of water surrounding the lodges provides protection from predators – resident beavers enter and exit their sophisticated homes incognito via waterfilled tunnels leading from the lodges to the pond. The largest lodge, found in Alberta, Canada, measures over 500m in length – though, contrary to a widely circulated myth, it is not visible from space! In deep or fast-moving water areas, beavers simply excavate into river banks and set up home there instead.


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They fell trees by gnawing through their trunks, then use the branches to dam streams. The dams create a pond, in the middle of which the beaver family constructs an island made of more branches. The island, or beaver lodge, is a perfect home where the beavers are safe from predators. how do beavers build their homes beaver dam construction inside a beaver dam beaver dam diagram beaver dams facts how do beavers know how to build dams beaver lodges do beavers live in dams