Cats recognise the voice of their owner, but never evolved to care.
22
One in three dog owners say they have talked to their pets on the phone.
427
Sloths take two weeks to digest their food.
243
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cows can sleep standing up, but they can only dream lying down.
745
A scorpion can hold its breath for up to 6 days.
19