Animal Age

How old does a North American beaver get? (age expectancy)

What is the maximal age a North American beaver reaches?

An adult North American beaver (Castor canadensis) usually gets as old as 15 years.

North American beavers are around 111 days in the womb of their mother. When born, they weight 415 grams (0.91 lbs) and measure 1.7 cm (0′ 1″). As a member of the Castoridae family (genus: Castor), a North American beaver caries out around 3 little ones per pregnancy, which happens around 1 times a year. Fully grown, they reach a bodylength of 75.7 cm (2′ 6″).

As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.

A North American beaver gets as old as 15 years

The North American beaver (Castor canadensis) is one of two extant beaver species (the other being the Eurasian beaver, Castor fiber). It is native to North America and introduced in South America (Patagonia) and Europe (primarily Finland and Karelia). In the United States and Canada, the species is often referred to simply as “beaver”, though this causes some confusion because another distantly related rodent, Aplodontia rufa, is often called the “mountain beaver”. Other vernacular names, including American beaver and Canadian beaver, distinguish this species from the other extant beaver species, Castor fiber, which is native to Eurasia. The North American beaver is an official animal symbol of Canada and is the official state mammal of Oregon.

Animals of the same family as a North American beaver

Not really brothers and sisters, but from the same biological family (Castoridae):

Animals that reach the same age as North American beaver

With an average age of 15 years, North American beaver are in good companionship of the following animals:

Animals with the same number of babies North American beaver

The same number of babies at once (3) are born by:

Weighting as much as North American beaver

A fully grown North American beaver reaches around 18.11 kg (39.93 lbs). So do these animals:

Animals as big as a North American beaver

Those animals grow as big as a North American beaver: