Science News from research organizations 1 . 2 . Cryptic sense of orientation of bats localized: the sixth sense of mammals lies in the eye . Date: May 5, 2021 Source: Leibniz Institute for Zoo and Wildlife Research (IZW) Summary: Mammals see with their eyes, hear with their ears and smell with their nose. But which sense or organ allows them to orient themselves on their migrations, which sometimes go far beyond their local foraging areas and therefore require an exten...