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Wall of sound

Indris, the largest lemurs, have taken teamwork on a leap. When an intruder enters their patch they give a battle cry, trying to intimidate it with a wall of sound. Their extraordinary cries carry for miles. Other members of the family add their voices to the chorus of disapproval. At this volume it must be like facing the home supporters of a local football team, and when the stranger backs off the family chase after him. They can cross gaps of 10 metres in a single bound and, as they have no tail to help them balance, must rely heavily on the powerful grip of their large hands and feet.

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