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10 animals that learn through play

By: Meredith Darlington on March 28, 2011, 3:48 p.m.
Horned lizard

Photo: BBC Earth

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Horned lizard

Here's a lizard with more than one trick: Not only can this lizard fake its own death by flipping onto its back when a predator appears, but if attacked, it can assert enough pressure in its sinuses to burst the blood vessels in its eyes — effectively squirting its attacker with blood!