Beaver dam
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A beaver dam or beaver impoundment is a dam built by beavers; it creates a pond which protects against predators and holds food during winter. These structures modify the natural environment in such a
Beaver dam at Algonquin Park in Ontario, Canada
North American beaver (Castor canadensis), one of two species of beaver
Beaver dam in Lassen Volcanic National Park
Beavers use rocks for their dam when mud and branches are less available as seen on Bear Creek, a tributary to the Truckee River, in Alpine Meadows, California
North American beaver
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The North American beaver is one of two extant beaver species, along with the Eurasian beaver. It is native to North America and has been introduced in South America and Europe. The North American bea
Beaver dam
…keystone species and ecosystem engineers. They build prolifically at night, carrying mud with their forepaws and timber between their teeth. Construction North American beaver (Castor canadensis), one of two species of beaver A minimum water level of 0.6 to 0.9 metres (2 ft 0 in to 2 ft 11 in) is required to keep the underwater…
North American beaver skeleton (Museum of Osteology)
Lithograph of a Canadian beaver, 1819.
Beaver lodge, Ontario, Canada