One in three dog owners say they have talked to their pets on the phone.
427
Cats recognise the voice of their owner, but never evolved to care.
22
Dogs sometimes fake being sick to get attention.
26
When dragonflies mate, their tails form a love heart.
22
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79