Dogs sometimes fake being sick to get attention.
26
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The most expensive cow in the world was sold in 2009 for $1.2 million.
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