The seahorse is the only fish to have a neck.
12
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
Dogs sometimes fake being sick to get attention.
26
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The colossal squid has the largest eyes in the world.
4