North American Beaver

 

Castor canadensis

Origin: North America

Lifespan: 10 to 15 years

Size: Adults are 3ft long and can weigh over 55lbs

  • Females can be larger than males

  • North American Beavers are typically smaller than Eurasian Beavers

Diet: Herbaceous

  • Prefer bark of aspen and poplar, also will eat birch, maple, willow, alder, cherry, red oak, beech, ash, hornbeam, and occasionally pine and spruce.

  • They will eat cattails, water lilies, and other aquatic vegetation

Activity: Nocturnal

Reproduction: Beavers families consisting of adult male and female with their kits

  • Yearlings and kits share the lodge, yearlings help care for the kits 

  • parents are a monogamous pair, mating for life

  • both male and female take part in caring for young

  • in colder climates breeding takes place in January to March in warmer climates it is November to December

  • kits are born between February and June

  • average litter size is three to four, by the time they are yearlings nearly 80% die from disease or predators

Kits start eating solids at 1 month, while still consuming mothers milk

Extra Facts: Beavers are semi-aquatic mammals.

    • They can stay underwater for as long as 15 minutes

    • Their oily fur creates a buffer between the beaver's skin and cold water to keep them warm

    • Their eyesight is poor, but they have great hearing, sense of smell, and touch

    • They have larger front teeth that continue to grow and are self-sharpening

    • Their teeth are orange because their thick enamel contains iron deposits which keep their teeth strong.

    • Second-largest rodent in the world

  • Beaver ponds, and the wetlands caused by them, remove sediments and pollutants from water

  • Beaver homes are called lodges, they have underwater entrances. the lodges are the living area, dams are created for food storage

  • They are prolific builders and can repair a dam in a night

 

 

 

 

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