Many of us humans take for granted our ability to perceive three-dimensional spaces, and neuroscientists have often wondered if this capability is present in other mammals. Researchers from the Weizmann Institute of Science in Israel have now constructed miniature wireless devices that measure brain activity and are able to detect how fruit bats perceive space, remember spaces and navigate within them. This is the first time neuroscientists have been able to observe the perception of space and movement in the brains of non-human mammals.