Dolphins have names for one another.
18
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Tigers can see 6 times better at night than humans.
305
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20