The colossal squid has the largest eyes in the world.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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