Mammal · GBIF taxon 2439838
American Beaver
Castor canadensisAlso known as North American Beaver, Canadian Beaver
As nature's premier ecosystem engineers, American beavers construct dams and lodges that transform forest streams into thriving wetland sanctuaries. These massive rodents use continuously growing, iron-fortified incisors to fell trees, build aquatic lodge structures, and store winter food reserves beneath the ice. A dense waterproof coat and broad, paddle-shaped tail equip them for a semi-aquatic lifestyle centered around close-knit family colonies.
AquaticKeystone SpeciesNocturnal
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Trembling Aspen
- Willow Shoots
- Aquatic Vegetation
Predators
- Gray Wolf
- Cougar
- Black Bear
ThreatsHabitat fragmentation, historic overhunting, and human conflict
HabitatsPonds, lakes, rivers, streams, and freshwater wetlands
Life span10 to 15 years in the wild
Size / weightNot available
Classification
- FamilyCastoridae
- SpeciesCastor canadensis
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Beavers have extremely sharp teeth and powerful jaws; keep a safe distance and never corner them.
Responsible observation
- Observation Distance: View from stream banks using binoculars, especially around twilight when they emerge to forage.
- Listen for Signals: A loud tail-slap on the water is an alarm signal; step back to avoid causing stress.
- Protect Dam Integrity: Never dismantle dams or lodges, as aquatic wildlife depends on these impoundments.
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