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15 remarkable animals that use tools

By: Bryan Nelson on Oct. 28, 2009, 10:09 a.m.
Crows and ravens

Photo: Zuma Press

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Crows and ravens

Aside from primates, crows and ravens show the most ingenuity in the animal kingdom. Their many clever tricks include manipulating sticks and twigs to extract insects from logs, dropping walnuts in front of moving cars to crack them, and even using scrap paper as a rake or sponge.