Gary Devereaux feeds penguins at the London Zoo

Photo: Oli Scarff/Getty Images

Peckish penguins

Devereaux serves the zoo's beloved Humboldt penguins a heaping tray of capelin, a small species of forage fish found in the frigid waters of the Antarctic and southern Atlantic Oceans.

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Gary Devereaux, the executive chef of the London Zoo

Photo: Oli Scarff/Getty Images

Behind the scenes

Gary Devereaux (left), the executive chef of London Zoo's caterers, helps prepare meals for zoo's animal residents in a food prep room on July 17 at the London Zoo in London, England.

When he's not assisting zookeepers on the finer points of non-human cuisine, Devereaux is preparing for the unveiling of the zoo's new Terrace Restaurant, which is due to open to the public on July 19.

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Blackboard lists the London Zoo's recipes

Photo: Oli Scarff/Getty Images

'NO PARSNIP'

Wall-to-wall chalk boards list the dietary requirements of various animals in one of the zoo's food prep room.

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A bucket filled with veggies and fruit for the zoo's gibbons

Photo: Oli Scarff/Getty Images

A meal fit for a monkey

This red bucket containing a variety of fruits and veggies is actually a meal designed to meet the strict dietary requirements of a single gibbon.

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Catie Leary is a photo editor at Mother Nature Network. Follow her on Twitter and Google+.