Gotals

Gotals evolved in dark Antar 4. As light is not available there, they evolved cranial cones, receptors to electromagnetism and other emissions. They do not rely on sight, but they can be great trackers thanks to their cones. However, natural emissions from a droid or a Jedi do damage Gotals. Culturally, they only seem to be attracted to other creatures with cones or horns. This has led to many unfortunate deaths as many male Gotals will be attracted to females of the H'nemethe species who tend to disembowel their mates.

Blantantly copied from Wikipedia http://en.wikipedia.org/wiki/Gotal#Gotal