Authorities say they're worried about a hippopotamus that is roaming loose in a swampy area of southern Mexico.

Nobody knows where the animal came from, but hippos are not native to the country. The hippo appears to have been living in a pair of ponds near Las Chopas, in the Gulf coast state of Veracruz.

A local offers Tyson, a branch to snack on. (AP) (AP)

A man takes a selfie with the unexpected visitor. (AP) (AP)

Mexico's office for environmental protection said that experts are looking for the best way to trap and move the three-year-old, 1,320-pound (600 kilogram) mammal. It also said hippos can be aggressive, posing a potential danger to the public and native species.