Creatures big and small have their annual weigh-in at London Zoo

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Creatures big and small have their annual weigh-in at London Zoo

Penguins, squirrel monkeys and gorillas are just some of the creatures who've had their growth checked at London Zoo's annual weigh-in.

With more than twenty thousand animals in their care, the keepers at ZSL London Zoo spend hours throughout the year recording the heights and weights of all the species.

The information helps them to monitor their health and well-being.

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