London Zoo

Zookeeper, Carl Ashworth, counts the number of penguins in his enclosure during London Zoo's annual stocktake.

Charlie Bibby/FT

Zookeeper Carl Ashworth counts the number of penguins in his enclosure during London Zoo’s annual stock take

An African bullfrog is weighed on a scale during a photocall to publicize the annual measuring of all the animals at the London Zoo.

Suzanne Plunkett /Reuters

An African bullfrog is weighed on a scale during a photocall to publicize the annual measuring of all the animals at the London Zoo.