LONDON, ENGLAND - JANUARY 03: A keeper holds a Praying Mantis during a photocall at ZSL, London Zoo's annual 'Stocktake' on January 3, 2017 in London, England. Zoological Society of London (ZSL), is home to over 650 different species of animal, which all need to be counted and cataloged during the annual stocktake, which is a compulsory requirement for their zoo license. (Photo by Dan Kitwood/Getty Images)