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Young infants have a vise-like grip,
used to cling on to mum for dear life.
As they get older,
they get bolder
and take more risks.
Those that survive spend a lot of time travelling.
The experienced adults know exactly where to find seasonal foods in different parts of their range.
In such steep terrain,
travel involves a high level of climbing skill.
These monkeys are spectacularly good rock climbers from the time they learn to walk.
In langur society, females rule the roost
and take the lead when the family is on the move.
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