Young male gorillas usually leave their family group when they are about 11 years old and have their own family group by the age of 15 years old. Young female gorillas join a new group at about 8 years old.

The legs of bats are too weak to support their weight, so they hang upside down.

A house in Baghdad worth $15,000 before the Iraq war now sells for $120,000 to $150,000.

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