[London, December 17. Image via Getty]

LONDON, ENGLAND - DECEMBER 17: Meerkats at ZSL London Zoo receive an early Christmas gift from their keepers of home-made crackers filled with meal worms and locusts on December 17, 2009 in London, England. The Zoological Society of London, which was founded in 1826, runs London Zoo and Whipsnade Zoo whilst also carrying out scientific research and conservation in the UK and abroad. (Photo by Oli Scarff/Getty Images)