American beaver

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beaver Castor Canadensis

Order Rodentia Rodents

  • Animals with 2 upper & 2 lower incisors and no canines
  • Of all mammals, has the most number of worldwide species

Family Castoridae Beavers  (1 family member in North America)

Have adaptations for semi-aquatic lifestyle including: large size,  underfur covered by outer long guard hairs for insulation,  webbed hind feet for swimming, small eyes with outer membrane covering, valve openings to ears & nostrils, can open mouths while underwater without taking water into the lungs.

Largest rodent in North America, weighing up to 74 lbs

Herbivores; eat plant leaves and inner bark.