Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Lobsters have blue blood.
476
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
Cats and dogs can hear ultrasound.
350