By Josie  June 29th, 2023

The World's Largest (and Cutest) Rodent

The largest rodent in the world is the Capybara, and it's definitely also the cutest one.

Let's get to know them:

Size of the World's Largest Rodent

These huge rodents measure 3.9 to 4.9 feet in length and can reach weights of 146 pounds.

Despite its size, the Capybara is a skilled swimmer, able to hold its breath for up to five minutes as it dives into the water to forage for food.


They have slightly webbed feet and a dense, bristly coat that varies from reddish-brown to grayish-brown.

It is a semi-aquatic mammal native to South America and is closely related to guinea pigs.

Origin of its Name

The name “capybara” comes from the Tupi language, spoken by indigenous people in Brazil, and means “master of the grasses.”

Social Behavior

This species of rodents are highly sociable, living in large family groups and maintain their group dynamics through vocalizations, scent marking, and grooming.

Their preferred plant foods include aquatic plants, such as duckweed, cattails, and various grasses.


The world's largest rodent is an incredibly adaptable animal and withstand brief periods of drought.



Due to their large size, predators such as anacondas, jaguars, and caimans often target Capybaras.

1. Deforestation 2. Illegal hunting 3. Climate Change

Threats Faced by the World's Largest Rodent

Yellow Wavy Line
Yellow Wavy Line

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