Animal count at the London Zoo
A Rockhopper penguin swims in it's enclosure during the ZSL London Zoo's annual count of animals in London, England, Jan. 5, 2015.
The zoo's annual count requires keepers to check on the numbers of every one of the 800 different animal species, including every invertebrate, bird, fish, mammal, reptile, and amphibian.
Counting the animals at the London Zoo
A zookeeper holds a Philippine crocodile during the ZSL London Zoo's annual animal count, Jan. 5, 2015.
Counting the animals at the London Zoo
Flamingos stand in their enclosure during the ZSL London Zoo's annual animal count, Jan. 5, 2015.
Counting the animals at the London Zoo
Sumatran tiger cubs and their parents walk around their enclosure at London Zoo in London, Jan. 5, 2015. The annual stock take and animal count, a requirement of London Zoo's license, included additions to the international conservation breeding program such as the three tiger cubs and Philippine crocodiles.
Counting the animals at the London Zoo
A Sumatran tiger walks through its enclosure at the ZSL London Zoo, Jan. 5, 2015.
Counting the animals at the London Zoo
A Sumatran tiger looks at visiting children from it's enclosure at the ZSL London Zoo's, Jan. 5, 2015.
Counting the animals at the London Zoo
A Bolivian squirrel monkey sits on a camera tripod, Jan. 5, 2015.
Counting the animals at the London Zoo
A zookeeper feeds Bolivian squirrel monkeys in London, England, Jan. 5, 2015.
Counting the animals at the London Zoo
A Humboldt penguin swims in its enclosure at the ZSL London Zoo, Jan. 5, 2015.
Counting the animals at the London Zoo
Zookeeper Vicky Eyson sits with Humboldt penguins at London Zoo, Jan. 5, 2015.
Counting the animals at the London Zoo
A zookeeper feeds Humboldt penguins, Jan. 5, 2015.