A dairy cow can produce more milk when listening to music.
446
The elephant brain weighs about 6,000g.
274
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
One in three dog owners say they have talked to their pets on the phone.
427
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2