Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
When cats are happy, they may squeeze their eyes shut.
10
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Lurch, a Watusi bull, had the largest horns in the world.
32
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Cats and dogs can hear ultrasound.
350