The Mexican free-tailed bat, also known as the Brazilian free-tailed bat, is a small, energetic species known for its high-speed flight and long migrations. They feed on a variety of insects and are known to be voracious predators capable of consuming large numbers of insects in a single night. The free-tailed bat has a unique skeletal structure that allows it to fly with great agility and speed. It is one of the fastest flying mammals in the world, with some individuals able to reach speeds of over 60 mph while in flight. Its wings are made up of a thin membrane stretched across its elongated fingers, and its tail extends beyond the edge of the membrane, giving it a distinctive appearance. Additionally, the free-tailed bat has a relatively large brain and excellent vision, which helps it navigate and hunt in the dark.