Denmark has twice as many pigs as there are people.
66
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
The elephant brain weighs about 6,000g.
274
Dogs sometimes fake being sick to get attention.
26
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14