Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
All the swans in England are property of the Queen.
36
The Basenji dog is the only dog that is not able to bark.
4
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The elephant brain weighs about 6,000g.
274
A hedgehog's heart beats 300 times a minute on average!
14
A rodent's teeth never stop growing.
16
Tigers can see 6 times better at night than humans.
305