Bat Embryos The first image are embryos of the species Molossus rufus, the black mastiff bat. These images formed part of an embryonic staging system for this species. — By Dorit Hockman The second image shows a bat embryo developing from 18 weeks to 24
About of all mammal species are bats. The world’s lightest mammal is the bumblebee bat. Bats can consume insects in one night. The world's largest bat, the Rodriguez fruit bat, has a wingspan of up to 6 ft.