The colossal squid has the largest eyes in the world.
4
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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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