Question: Whats the weirdest animal habit you have come across?

Andrew Jackson answered on 13 Nov 2012:

I think the animals that live in very deep, very dark caves are amazing. Becuase they have evolved in a place with absolutely no light, they have evolved very clever ways to move around their environment, and visualise their surroundings without light. They tend to be very sensitive to touch, and some can even detect the tiny electical impulses in the muscles of the other animals in the water in the caves, and so they can hunt them for food.