Cows can sleep standing up, but they can only dream lying down.
745
One in three dog owners say they have talked to their pets on the phone.
427
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132