The representative largest Myrmecophagidae family and can reach up to 2.1 m in length and 45 kg in weight. It has no teeth, and tongue can reach 61 cm in length, but only 13mm wide. Produces a sticky saliva that ants and termites are retained. They have three toes on forefeet and five on hind feet. They are usually gray, with white members, with a banda diagonal black and white shoulder length. The anteaters tend to walk on their knuckles, due to the long length of his claws.
It inhabits a wide variety of environments, from tropical rain forest to savanna environments and open fields, being more common in the latter. The giant anteater is one of the most specialized predators that exist, feeding almost exclusively on ants and termites. However, there is also a preference among species of ants and termites that are predated by giant anteater taking into consideration the nutritional value, availability and response their prey to the attack .