Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A lion in the wild usually makes no more than twenty kills a year.
186