This zoo needs to weigh its animals, and that's more difficult than you think

A penguin steps on scales during a photocall for the annual weigh-in at London Zoo in London, Britain. Photos: Reuters

[vc_row][vc_column][vc_column_text]London Zoo hosted its annual weigh-in for more than 20,000 animals on Thursday (Aug 24), dangling food above lions and placing scales in front of penguins to get them to walk onto them.

Used as an opportunity to keep the zoo's records up to date, the measurement and documentation process takes many hours and zoo keepers.