Madagascan rousette of the genus "Rousettus", these bats reside within cave roosts, suggesting the use of echolocation. These bats are a part of a larger group of fruit bats within "Rousettus" which consists of 10 different species. The Madagascan rousette primarily resides on western Indian Ocean islands. The habitat of the Madagascan rousette is generally found to be associated with forests. They will roost well beyond the time of twilight. Many roosts have been found within caves however some bats have been found without a known cave roost, suggesting that the Madagascan rousette may sometimes roost within tree holes or other alternatives.
Mexican free-tailed bat bats. Their ears are wide, rounded, and large compared to their head, nearly meeting at the front of the face but distinctly not joined at the midline and projecting anterodorsally from just before the muzzle to the back of the head. They use their large ears to help them find prey using echolocation. "T. brasiliensis" is distinguished among North American Tadarida bats in possessing deep wrinkles on the upper lip and in having a Z-shaped upper third molar which is used for grinding insects. These individuals possess canines which are larger in males than in females. The wings are elongated