North American beaver
Amazing fact
A North American beaver’s incisors keep growing throughout its life.
University of Michigan Animal Diversity Web
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An illustration based on the real animal.
A little discovery to share.
A North American beaver’s incisors keep growing throughout its life.
THE REAL WORLD
The real North American beaver
- Scientific name
- Castor canadensis
- Japanese name
- アメリカビーバー
- Group
- Land mammals
- Class
- Mammalia
- Order
- Rodentia
- Family
- Castoridae
- Genus
- Castor
Its broad, scaly tail works as a rudder underwater, and when danger comes it slaps the water to warn the others.
It gnaws down big trees and eats the bark, and uses the rest, along with mud, to build dams and lodges.
How the North American beaver lives
It is mainly active at night. It also eats water plants, buds and roots. It stores logs and twigs underwater for food in winter. The floor inside its lodge is covered with bark, grass and wood.
University of Michigan Animal Diversity WebBasic data
- Diet
- Tree bark
- Range
- North America
Where the North American beaver has been recorded
Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF
Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.
Names around the world
- 日本語
- アメリカビーバー
- 简体中文
- 美洲河狸
- 繁體中文
- 美洲河貍
- 한국어
- 아메리카비버
- Español
- Castor americano
- Français
- Castor du Canada
- Deutsch
- Kanadischer Biber
- Português (Brasil)
- Castor-americano
- Italiano
- Castoro americano
- العربية
- قندس أمريكي
- Bahasa Indonesia
- Biwara amerika utara
- Tiếng Việt
- Hải ly châu Mỹ
- Русский
- Канадский бобр
- Türkçe
- Yeni Dünya kunduzu
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 秋田市大森山動物園 — アメリカビーバーChecked: 2026-11-03
- University of Michigan Animal Diversity Web — Castor canadensisChecked: 2026-11-03
We check each fact against its source. The illustrations simplify how the real animal looks.
The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.
The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.
This page was translated from the original Japanese with the help of AI.
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