The Amazonian manatee (Trichechus inunguis) is a species of manatee of the order Sirenia. It is found living in the freshwater habitats of the Amazon Basin in the countries of Brazil, Peru, Bolivia, Colombia and Ecuador. It has thin, wrinkled skin, and is almost hairless, but has "whiskers" around its mouth. It also has a distinct white breast patch, with fine hairs scattered over its body. It is also known as the Amazon manatee or sea cow. The Amazonian manatee is the second-smallest species of manatee after the dwarf manatee (Trichechus pygmaeus) from Brazil. However, the validity of the dwarf manatee as a species is the subject of debate, with some believing it to be an immature Amazonian manatee.