avoid obstacles and nab insects on the wing by emitting
ultrasonic squeaks and interpreting the echo the sound waves make after bouncing off objects in the environment
special cells in their brains
sensitive to the electrical fields other creatures generate
can find fish hiding under sand by the weak electric signals their twitching muscles emit
Temperature-sensitive organs
sense the body heat of their prey
perceive depth and strike with deadly accuracy
attuned to wavelengths of light outside the visible range
a mirror-like membrane in the backs of their eyes
lets them hunt and move in almost complete darkness
use its tongues to collect particles wafting in the air
odors get processed and translated into electrical signals
By whisking the hairs across objects
form mental pictures of their surroundings
clipped from: www.livescience.com 
