It is hard to guess what a Mountain beaver weights. But we have the answer:
An adult Mountain beaver (Aplodontia rufa) on average weights 806 grams (1.78 lbs).
The Mountain beaver is from the family Aplodontidae (genus: Aplodontia). It is usually born with about 23 grams (0.05 lbs). They can live for up to 10 years. When reaching adult age, they grow up to 30.7 cm (1′ 1″). On average, Mountain beavers can have babies 1 times per year with a litter size of 2.
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 mountain beaver (Aplodontia rufa) is a North American rodent. It is the only living member of its genus, Aplodontia, and family, Aplodontiidae. It should not be confused with true North American and Eurasian beavers, to which it is not closely related.
Animals with the same weight as a Mountain beaver
As a comparison, here are some other animals that weight as much as the Aplodontia rufa:
- Livingstone’s fruit bat bringing 733 grams to the scale
- White-eared titi bringing 898 grams to the scale
- Lord Derby’s scaly-tailed squirrel bringing 665 grams to the scale
- Eastern white-eared giant rat bringing 867 grams to the scale
- Amazon bamboo rat bringing 650 grams to the scale
- Black-footed ferret bringing 907 grams to the scale
- Western white-eared giant rat bringing 932 grams to the scale
- Mexican prairie dog bringing 900 grams to the scale
- Southern brown bandicoot bringing 825 grams to the scale
- Yellow mongoose bringing 694 grams to the scale
Animals with the same size as a Mountain beaver
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Mountain beaver:
- European polecat with a size of 35.9 cm (1′ 3″)
- Pichi with a size of 29.7 cm (1′ 0″)
- Golden-rumped elephant shrew with a size of 27.3 cm (0′ 11″)
- Long-tailed chinchilla with a size of 30.5 cm (1′ 1″)
- Basilan flying squirrel with a size of 24.8 cm (0′ 10″)
- Black-bearded flying fox with a size of 28.5 cm (1′ 0″)
- Goeldi’s marmoset with a size of 28 cm (1′ 0″)
- Malayan weasel with a size of 32.6 cm (1′ 1″)
- Little Swan Island hutia with a size of 33.7 cm (1′ 2″)
- Tapeti with a size of 36.3 cm (1′ 3″)
Animals with the same litter size as a Mountain beaver
Here is a list of animals that have the same number of babies per litter (2) as a Mountain beaver:
- White-lipped peccary
- Guaira spiny rat
- Mediterranean pine vole
- Layard’s palm squirrel
- White-footed tamarin
- Crested porcupine
- Indomalayan pencil-tailed tree mouse
- Long-nosed bandicoot
- Highland streaked tenrec
- Yellow golden mole
Animals with the same life expectancy as a Mountain beaver
Completely different animals, but becoming as old as a Mountain beaver:
- Speke’s pectinator with an average maximal age of 10 years
- Nathusius’s pipistrelle with an average maximal age of 8 years
- Black duiker with an average maximal age of 10.17 years
- Blue duiker with an average maximal age of 12 years
- White-lined broad-nosed bat with an average maximal age of 10.17 years
- Long-nosed potoroo with an average maximal age of 12 years
- Lesser short-nosed fruit bat with an average maximal age of 8 years
- Plains viscacha with an average maximal age of 9.33 years
- Weasel sportive lemur with an average maximal age of 12 years
- Common spotted cuscus with an average maximal age of 11 years