Guyana is known as the land of the giants, and the giant anteater, the world’s largest anteater, is one of the six or seven reasons why. The giant anteater goes by the scientific name Myrmecophaga tridactyla. It is a mammal which feeds on insects and has an average lifespan of 14 years. About two to three feet in height, the giant anteater weighs between 40 and 140 pounds. The giant anteater can reach as long as eight feet from the tip of its snout to the end of its tail.