In the Amazon there’s a bat whose name is almost bigger than it is—the white-lined sac-winged bat. They’re also called the greater sac-winged bat, although they are only 1.8–2.2 in long and weigh only 0.2–0.35 oz (6–10 g). Greater than what?
The fur on the back of these sac-winged bats is dark brown with distinct white lines, the rest of their fur is dark gray. These bats are the most commonly seen in the rainforest.