Both female and male African elephants have tusks but only the male Asian elephants have tusks. They use their tusks for digging and finding food.

Sharks do not have a single bone in their bodies. Instead they have a skeleton made up of cartilage; the same type of tough, flexible tissue that makes up human ears and noses.

Male pups will intentionally let female pups “win” when they play-fight so they can get to know them better.

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