Animal Size

Hispid cotton rat size: How big do they get?

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

A grown Hispid cotton rat (Sigmodon hispidus) reaches an average size of 16.7 cm (0′ 7″).

When born, they have an average size of 0 cm (0′ 0″). During their lifetime of about 5.17 years, they grow from 6 grams (0.01 lbs) to 111 grams (0.24 lbs). Talking about reproduction, Hispid cotton rats have 5 babies about 2 times per year. The Hispid cotton rat (genus: Sigmodon) 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 Hispid cotton rat is  (0' 7

The hispid cotton rat (Sigmodon hispidus) is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, have split this widely distributed species into three separate species (S. hispidus, S. toltecus, and S. hirsutus). The southern edge of the S. hispidus distribution is likely near the Rio Grande, where it meets the northern distribution of S. toltecus (formerly S. h. toltecus). The northern extent of S. hispidus distribution is to the Platte River in Nebraska and from Arizona to Virginia. Adult size is total length 202–340 mm (7.9–13 in); tail 87–122 mm (3.4-4.8 in), frequently broken or stubbed; hind foot 29–35 mm (1-1.3 in); ear 16–20 mm (0.6-0.9 in); mass 50-250 g (1.7-9 oz). They have been used as laboratory animals.

Animals of the same family as a Hispid cotton rat

We found other animals of the Muridae family:

Animals with the same size as a Hispid cotton rat

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

Animals with the same litter size as a Hispid cotton rat

Here is a list of animals that have the same number of babies per litter (5) as a Hispid cotton rat:

Animals with the same life expectancy as a Hispid cotton rat

Completely different animals, but becoming as old as a Hispid cotton rat:

Animals with the same weight as a Hispid cotton rat

As a comparison, here are some other animals that weight as much as the Sigmodon hispidus: