Animal Size

Bristle-spined rat size: How big do they get?

How big does a Bristle-spined rat get? Here is an overview over the average adult age:

A grown Bristle-spined rat (Chaetomys subspinosus) reaches an average size of 60 cm (2′ 0″).

When born, they have an average size of 0 cm (0′ 0″). A full-grown exemplary reaches roughly 1.3 kg (2.87 lbs). The Bristle-spined rat (genus: Chaetomys) is a member of the family Echimyidae.

As a reference: Humans reach an average body size of 1.65m (5′ 5″) while carrying 62 kg (137 lbs). A human woman is pregnant for 280 days (40 weeks) and on average become 75 years old.

The average adult size of a Bristle-spined rat is  (2' 0

The bristle-spined rat (Chaetomys subspinosus) is an arboreal rodent from Atlantic forest in eastern Brazil. Also known as the bristle-spined porcupine or thin-spined porcupine, it is the only member of the genus Chaetomys and the subfamily Chaetomyinae. It was officially described in 1818, but rarely sighted since, until December 1986, when two specimens – one a pregnant female – were found in the vicinity of Valencia in Bahia. Since then it has been recorded at several localities in eastern Brazil, from Sergipe to Espírito Santo (there are no recent records from Rio de Janeiro), but it remains rare and threatened due to habitat loss, poaching and roadkills.

Animals of the same family as a Bristle-spined rat

We found other animals of the Echimyidae family:

Animals with the same size as a Bristle-spined rat

Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Bristle-spined rat:

Animals with the same weight as a Bristle-spined rat

As a comparison, here are some other animals that weight as much as the Chaetomys subspinosus: