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This wriggling Waxmonkey frog was among the species weighed at London Zoo today. He was 40g - a tenth of the size of the African Bullfrog.
Measuring Sumatran tiger Jae Jae was particularly trying for staff at London Zoo. They coaxed her to standing height with meat - managing to get a very brief measurement on their huge ruler. She came out at 6ft 6inches in her annual check-up.
How much does a camel weigh? And how do you get one onto the scales to find out? Here's a demonstration from the keepers at London Zoo, who are weighing all the animals as part of an annual survey.
Ghengis weighed 500g and Noemie 625kg. Keepers said both had lost weight after shedding their winter coats.
Attracting an anteater onto the scales is no easy feat, as keepers at London Zoo demonstrated today. Tammy the tamandua had to be coaxed with mealworms - with varying levels of success. She weighed in at 6.8kg - the same as a road bike.
Rebecca the Royal Python weighed in at 600g at today's London Zoo annual weigh-in. She took some convincing to stay still long enough to get the measurement though.
The measurements taken during London zoo's annual stock-take are used to monitor the animals' health and shared with zoos across the world to compare information on endangered species.
Animals stepped on the scales at London Zoo today for the annual weigh-in. It allows the keepers to keep check of all their vital statistics and make sure they're all fit and healthy.
Waxy monkey frogs, giant African land snails and tamandua tree anteaters were among the creatures to take to the scales.