A Brazilian state legislature got some uninvited guests last week, and they were not petitioners or protesters, but very large rodents with vestigial tails and brown fur.

We suspect you want to know a bit more.

So the animal you’ve got for me today is …?

Not a giraffe, a duck or a stoat. Today, it’s a capybara (pronounced cap-ee-BAR-uh or cap-ih-BARE-uh).

Native to South America, capybaras are rodents: They eat grass and other vegetables and plants (including corn, beans and carrots) and, being semiaquatic, live by fresh water.

Weighing up to 150 pounds, they are also the world’s largest rodents. If that makes you think of a menacing giant rat, be easy. Capybaras won’t necessarily make you scream and jump on a chair.

In fact, many people find them … cute.

Tell me what happened in Brazil.

Two capybaras wandered last week into the reception area of the legislature of Mato Grosso, a state in Central-West Brazil. Nayara Bueno, a parliamentary aide, immortalized the moment in a brief video that she posted on social media.

“Since there’s a lake right in front of the assembly, there are usually a lot of them,” she said in an interview. “At dusk they always cross the street and head over to the assembly building because in front, there’s a fountain that’s always running. So, they’re always hanging around there, eating the grass and wading into the fountain.”