24 August 2021

Weighing every Zoo animal

A huge-scale operation is underway at the Zoo, as keepers coax thousands of animals, including meerkats, reindeer and rhinoceroses, to step onto the scales for the annual weigh-in. 

As part of their regular check-ups, all creatures great and small are having their vital statistics recorded as a way of keeping track of the health and wellbeing of the 9,500 animals at the conservation Zoo. 
Greater one-horned rhinoceros Beluki, one of the heaviest animals at the UK’s largest Zoo, stepped onto an industrial sized scale and weighed in at 1650kg, while the Zoo’s smallest inhabitants, like butterflies and spiders, required extra sensitive equipment to weigh them accurately.  
It took a little, gentle coaxing from zookeepers to encourage Heidi the reindeer to step up to her scales, whilst one-year-old scarlet macaws, Haribo, Skittles and Sherbet, swooped straight onto their special weighing perch. 

Our 2021 annual stocktake 

Zoo weigh-in

The animals’ weights and measurements are recorded in a database called Zoological Information Management System (ZIMS), which helps zookeepers around the world compare important information on thousands of endangered species.  
Zoological manager Matthew Webb said: “All of our animals at Whipsnade Zoo are weighed and measured regularly, but the annual weigh-in is an opportunity to review the information we’ve recorded, and ensure it is up-to-date and accurate. 
“With so many animals with different personalities, the zookeepers have to come up with creative tactics to entice them onto the scales, from luring Northern rockhopper penguins onto scales in exchange for their favourite fishy snacks, to encouraging our ring-tailed lemurs to bounce onto the scales for a tasty reward.” 

Ring-tailed lemur at annual weigh-in

As well as a key gauge of the animals’ well-being, keepers can use the regular weight checks and waist measurements to identify pregnant animals, many of which are endangered species that form part of the Zoo’s international conservation breeding programmes. 
Best known for its own colossal beasts that graze enormous enclosures, like the Zoo’s two herds of prehistoric looking rhinoceroses, Whipsnade Zoo is home to over 9,500 amazing animals, including Amur tigers, spritely squirrel monkeys and adorable otters.  Proudly helping to protect threatened species, Whipsnade has contributed to reintroductions of extinct-in-the-wild species, such as the Przewalski’s horse, and through their entry fee, every visitor is contributing to ZSL’s worldwide conservation work for animals and their habitats.   

Visitors can encounter the huge range of animals, from mini to mammoth, for themselves this bank holiday weekend at Whipsnade Zoo. 

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