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).

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 …

Beavers dive underwater to escape danger and can remain submerged for up to six minutes. As ecosystem engineers, beavers are best known for cutting trees, building dams, and adapting their …

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. …

Beavers are the largest rodents in North America and one of the few species that significantly change their environment. By building dams, which form slow-moving ponds and reduce erosion, they …

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 …

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

Beavers are semi-aquatic herbivores. They travel from water to land to collect and eat tree bark, leaves, roots, and wetland plants. Beavers are monogamous. They mate at around three years of age. …

The largest rodents in North America, beavers are herbivores feasting on herbaceous plants and the bark of woody plants. Their eating habits indicate that they have preferences for certain species …

Learn more about beaver benefits, biology, and history below. Kit catching a ride, photo by Rusty Cohn / Napa Beavers.