London Zoo gets creative for its annual weigh-in

LONDON - London Zoo hosted its annual weigh-in for more than 20,000 animals on Thursday, dangling food above lions and placing scales in front of penguins to get them to step onto them.

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

Meat is placed above the lions to get them to stand on their hind legs, while penguins are lured onto the scales with food.