When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
One in three dog owners say they have talked to their pets on the phone.
427
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The cat brain weighs about 30g.
167
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