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Animal Weight

How much does a North American beaver weight?

It is hard to guess what a North American beaver weights. But we have the answer:

An adult North American beaver (Castor canadensis) on average weights 18.11 kg (39.93 lbs).

The North American beaver is from the family Castoridae (genus: Castor). It is usually born with about 415 grams (0.91 lbs). They can live for up to 15 years. When reaching adult age, they grow up to 75.7 cm (2′ 6″). On average, North American beavers can have babies 1 times per year with a litter size of 3.

As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.

The average adult weight of a North American beaver is 18.11 kg (39.93 lbs)

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

We found other animals of the Castoridae family:

Animals with the same weight as a North American beaver

As a comparison, here are some other animals that weight as much as the Castor canadensis:

Animals with the same size as a North American beaver

Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as North American beaver:

Animals with the same litter size as a North American beaver

Here is a list of animals that have the same number of babies per litter (3) as a North American beaver:

Animals with the same life expectancy as a North American beaver

Completely different animals, but becoming as old as a North American beaver: