Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Jellyfish as a species are actually older than dinosaurs and sharks.
383
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 cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17