Pigs' teeth and hippo poo: behind the scenes at London zoo

The Zoological Society of London zoo is home to more than 650 animal species. Photographer Linda Nylind was given exclusive access to spend time with the keepers and find out more about their daily routines

London zoo was established in 1828 and is the world's oldest scientific zoo. Created as a collection for the Zoological Society of London (ZSL), the animals from the Tower of London's menagerie were transferred there in 1832 and it opened to the public in 1847. Today it houses more than 20,000 animals and almost 700 species.

ZSL is not funded by the state - it relies on memberships and fellowships, entrance fees and sponsorship to generate income.