Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
Dogs have been man's pet for over 14,000 years.
224
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20