brown rodent on brown tree branch

16 Interesting Facts About Beavers

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Beavers are fascinating semi-aquatic rodents that play an important role in shaping wetland habitats. Known for their engineering skills and buck teeth, these large rodents have many unique traits and behaviors. Read on to uncover 16 captivating facts about the lives of beavers.

Interesting Facts About Beavers

  1. Beavers have bright orange, iron-reinforced front teeth that never stop growing. They can chew through trees up to 6 inches in diameter with their powerful incisors. Beavers must constantly gnaw on wood to wear down their continuously growing teeth.
  2. Beavers form lifelong, monogamous bonds with their mates. Mated pairs stay together in lodges they build out of sticks, logs, rocks, grass, and mud.
  3. Excellent swimmers, beavers can remain submerged for up to 15 minutes thanks to special adaptations like valves that close off their ears and nose. Their webbed hind feet and large paddle-shaped tail propel them gracefully through the water.
  4. Industrious beavers fell trees and saplings by chewing through the bark with their sharp orange incisors. They use the logs and branches to construct dams up to 1000 feet long across streams.
  5. Beaver dams expand wetlands, ponds and flooded areas that provide habitat for many species of birds, fish, amphibians, and insects. Their ecosystem engineering increases biodiversity.
  6. When startled, beavers loudly slap their scaly tails on the water as an alarm signal to warn other beavers of potential threats. The slaps can be heard from a great distance, even by beavers who are underwater.
  7. Beaver lodges have underwater tunnel entrances leading up into dry, above-water chambers where the rodents sleep, give birth, and raise kits. The underwater entries protect beavers from predators.
  8. Overhunting for the fur trade almost wiped out beaver populations until conservation efforts helped them recover across North America. Their water-repellent fur is still prized today.
  9. By creating ponds and wetlands, beaver dams serve as natural fire breaks. Their ecosystems are less prone to catching fire, helping control wildfires.
  10. Beavers have transparent inner eyelids that function like goggles, allowing them to see clearly underwater as they swim. The third eyelid folds over each eye to keep it moist and protected.
  11. Industrious beavers build canals over 150 feet long to float food like tree branches back to their lodges for winter storage. They construct feed beds by anchoring sticks in the mud.
  12. Beavers were considered fish by the Catholic church during medieval times, which allowed Catholics to eat beaver meat on no-meat days when land animals were forbidden.
  13. A beaver’s large, flat, scaly tail serves as a fat storage depot to help them survive cold winters and periods when food is scarce. Their tails also aid swimming and balance.
  14. Beavers have bright orange front teeth because they contain iron deposits which make their incisors extremely hard, durable, and strong – perfect for chewing through tough wood.


In summary, beavers are truly one of nature’s most incredible engineers. These aquatic mammals play a vital ecological role by creating diverse new wetland habitats filled with life. Their unique adaptations allow them to transform landscapes in ways that benefit many different species, including humans. Beavers have many fascinating traits and behaviors that aid their semi-aquatic lifestyles.

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