Annual weigh-in at ZSL London Zoo

Zookeepers have gathered their scales and tape measures as they being the annual animal weigh-in at ZSL London Zoo.

From big cats to tiny frogs, keepers spend hours each year recording every animal’s vital statistics, enabling them to keep a close check on their overall well-being.

Responsible for more than 19,000 animals, ZSL London Zoo’s keepers often have to come up with innovative ways of encouraging the animals to be weighed and measured, from training tigers to stand up against a glass window to walking a camel onto hidden weigh bars in exchange for a treat.

The measurements are then recorded into the Zoological Information Management System (ZIMS), where they are shared with zoos across the world, and used to compare information on thousands of endangered species.

Waxy Tree Frog Web

A waxy tree frog sitting on a spoon.

Jae Jae getting measured

Jae Jae, the Sumatran tiger, about to get measured.

Tree anteater getting weighed

Tammy, our tree anteater, gets some tasty treats during her weigh-in.

Camel getting weighed

Our keepers look happy with our camel's weigh-in result.

 

Giant Stick insect

Even giant stick insects need to get measured up.

Book Zoo tickets

More news from ZSL

The reptile house at ZSL London Zoo

People with an enchanted surname go FREE at ZSL London Zoo on Monday 26 June 2017!

Narrow-striped mongoose pup

Malagasy narrow-striped mongoose pair successfully breed for the second time in six months

Giraffes enjoy veggie treat ahead of Zoo Nights

ZSL London Zoo's giraffe trio celebrate the Zoo’s very first Zoo Nights with their own street-food style feast.