Zookeepers recorded the heights and weights of all the creatures at ZSL London Zoo, which is home to more than 650 different species, in order to monitor their health. Feast your eyes on the photos of the animals during the annual weigh-in on August 26.
Squirrel monkeys during the annual weigh-in at ZSL London Zoo, London. /VCG
Asiatic lioness Arya during the height measurement procedure at ZSL London Zoo, London. /VCG
A big-headed turtle during the annual weigh-in at ZSL London Zoo, London. /VCG
Galapagos tortoise Polly is measured at ZSL London Zoo, London. /VCG
A midwife toad sits on a scale during the annual weigh-in at London Zoo, London. /VCG
Tawny owl Owlberta during the annual weigh-in at ZSL London Zoo, London. /VCG
A Humboldt penguin on a scale during the annual weigh-in at London Zoo, London. /VCG
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