Creatures of all shapes and sizes have been lining up for their annual weigh-in at ZSL London Zoo.
Camels, penguins, squirrel monkeys and spiders were among those having their height and weight recorded.
It allows zookeepers to monitor their health and wellbeing.
Keeper Maggie measures a giraffe during the annual weigh-in at ZSL London Zoo
Keeper Joe Capon weighs Polly the Galapagos giant tortoise during the annual weigh-in at ZSL London Zoo, London
Keepers Jessica Young and Megan Harber weigh Oni the okapi, and measure her pregnant belly, during the annual weigh-in at ZSL London Zoo, London
Squirrel monkeys are weighed during the annual weigh-in at ZSL London Zoo
Keeper Kate Clark weighs an otter during the annual weigh-in at ZSL London Zoo
Keeper Martin Franklin weighs humboldt penguins during the annual weigh-in at ZSL London Zoo
Senior keeper Laura Garrett weighs meerkats during the annual weigh-in at ZSL London Zoo
Senior keeper Jamie Mitchell prepares Katie the tarantula to be weighed, during the annual weigh-in at ZSL London Zoo
Senior keeper Tony Cholerton weighs squirrel monkeys, during the annual weigh-in at ZSL London Zoo
An otter during the annual weigh-in at ZSL London Zoo
Keeper Mick Tiley weighs Noemie the bactrian camel, during the annual weigh-in at ZSL London Zoo
