Cats recognise the voice of their owner, but never evolved to care.
22
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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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
Whales and dolphins can't taste anything other than salt.
11
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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