Beavers (genus Castor) are large semiaquatic rodents of the Northern Hemisphere. There are two existing species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber).

Beavers' incisors appear dark orange due to the high amount of iron contained in the enamel, which is the hard outer layer of the teeth. The iron strengthens the enamel, helping prevent the teeth from …

Jan 6, 2026 · beaver, (genus Castor), either of two species of amphibious rodents native to North America, Europe, and Asia. Beavers are the largest rodents in North America and Eurasia and the …

North American (Canadian) beavers are widespread across the continental United States, Canada, southern Alaska, and some parts of northern Mexico.

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Beavers, often hailed as nature’s engineers, are far more than just bucktoothed rodents. These industrious creatures play a critical role in shaping landscapes and maintaining healthy ecosystems. …

Find out more about beavers, where they live and how big they are, along with other fascinating beaver facts and what you can do to help.

6 days ago · Beavers are semi-aquatic mammals, widely renowned for their remarkable abilities in building dams and lodges made of branches, twigs, tree limbs, and other natural resources. They are …

Beavers are ecosystem engineers that build dams, boost biodiversity, and help fight climate change. Learn how conservation is helping them thrive.

Beavers are fascinating semi-aquatic mammals known for their incredible ability to transform landscapes. With their distinctive skills in dam-building and lodge construction, these rodents play a …