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Beaver

on October 23, 2009; last updated October 23, 2009
Zoo Guide: mini spiral-bound
Beaver

Design

God created the beaver with valves that close off its ears and nostrils when it dives underwater. It also has a skin flap that seals off its mouth but leaves its incisors exposed for use while underwater. This animal also has transparent eyelids. These not only allow the beaver to see well underwater, but they also protect the eyes from debris. For a beaver to be an efficient diver, its heart is designed to beat more slowly during a dive. This conserves oxygen and keeps the blood supply to the brain normal.

Features

  • Most beaver species are recognized by the large flat, paddle-shaped tail.
  • It has large, webbed hind feet for digging and swimming.

Fun Facts

  • The beaver is the largest rodent in North America.
  • It uses its tail to warn others of the presence of predators, to swim, and to stand upright. It does not use it to build dams.
  • The beavers stores branches of trees on the bottom of ponds for winter food.

Created Kind Members

American beaver, giant beaver

CLASS: Mammalia (mammal)
ORDER: Rodentia (rodents)
FAMILY: Castoridae (beavers)
GENUS/SPECIES: Castor canadensis and C. fiber (American and Eurasian)

Size: 3–4 ft (0.9–1.2 m) long, including the tail
Weight: Between 30 and 70 lbs (14–32 kg)
Original Diet: Plants
Present Diet: Plants, bark, and roots of trees
Habitat: Forested stream systems in North America, Northern Europe, and Northern Asia

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