Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The reindeer is the only mammal that can see UV light.
17