Animal Size

Polynesian rat size: How big do they get?

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

A grown Polynesian rat (Rattus exulans) reaches an average size of 11.9 cm (0′ 5″).

When born, they have an average size of 0 cm (0′ 0″). A full-grown exemplary reaches roughly 50 grams (0.11 lbs). On birth they have a weight of 2 grams (0 lbs). Talking about reproduction, Polynesian rats have 3 babies about 3 times per year. The Polynesian 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 average adult size of a Polynesian rat is  (0' 5

The Polynesian rat, Pacific rat or little rat (Rattus exulans), known to the Māori as kiore, is the third most widespread species of rat in the world behind the brown rat and black rat. The Polynesian rat originated in Southeast Asia, and like its relatives, has become widespread, migrating to most Polynesian islands, including New Zealand, the Marshall Islands, Easter Island, and Hawaii. It shares high adaptability with other rat species extending to many environments, from grasslands to forests. It is also closely associated with humans, who provide easy access to food. It has become a major pest in most areas of its distribution.

Animals of the same family as a Polynesian rat

We found other animals of the Muridae family:

Animals with the same size as a Polynesian rat

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

Animals with the same litter size as a Polynesian rat

Here is a list of animals that have the same number of babies per litter (3) as a Polynesian rat:

Animals with the same weight as a Polynesian rat

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