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Animal World
Eurasian Beaver — photograph 1
📷 Per Harald Olsen · CC BY-SA 3.0
IUCN: Least Concern

Eurasian Beaver

Castor fiber

KingdomAnimalia›PhylumChordata›ClassMammalia›OrderRodentia›FamilyCastoridae›GenusCastor
About

Eurasian beavers reshape whole valleys by felling trees and building dams that slow and clean water, creating wetlands used by fish, amphibians, birds, and insects. Family groups live in lodges with underwater entrances and slap their broad flat tails on the water to warn of danger. Hunted to near extinction for fur and castoreum by 1900, they have recovered through protection and reintroductions and are now welcomed back as a keystone species across Europe.

Key Facts
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Habitat
Rivers, streams, lakes, and ponds with wooded banks
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Diet
Herbivore — bark, twigs, aquatic plants, and coarse vegetation
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Size & Weight
Body 74–90 cm; tail 30–40 cm
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weight
11–30 kg
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Lifespan
10–15 years wild
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Range
Much of Europe and northern Asia after widespread reintroductions
MammalRodent
Photo Credits
#1Per Harald Olsen · CC BY-SA 3.0
#2Juliux · CC BY-SA 3.0
#3Alex Zelenko · CC BY-SA 4.0
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