Animal Size

Japen rat size: How big do they get?

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

A grown Japen rat (Rattus jobiensis) reaches an average size of 21.6 cm (0′ 9″).

When born, they have an average size of 0 cm (0′ 0″). A full-grown exemplary reaches roughly 380 grams (0.84 lbs). The Japen rat (genus: Rattus) is a member of the family Muridae.

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 Japen rat (Rattus jobiensis) is a species of rodent in the family Muridae found only in Yapen, Biak-Supiori, and Owi islands of West Papua, Indonesia.

Animals of the same family as a Japen rat

We found other animals of the Muridae family:

Animals with the same size as a Japen rat

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

Animals with the same weight as a Japen rat

As a comparison, here are some other animals that weight as much as the Rattus jobiensis: