A 10 week old stuffed Tiger cub and a Tortoise are displayed in a cabinet at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. The exhibition is organised by “Operation Charm”, a Metropolitan Police partnership aimed at tackling the illegal trade in endangered wildlife and runs for one month at London Zoo. Items include a 10 week old stuffed Tiger cub, the tooth of a sperm whale, Ivory carvings, and a stuffed Tiger. (Photo by Dan Kitwood/Getty Images)

Tiger bone plasters are displayed in a cabinet at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

Seahorses are displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

A Mountain Gorilla skull and a pot of Russian Caviar are displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

Detective Sergeant Ian Knox holds a stuffed Hawksbill Turtle at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

A stuffed Tiger is displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

Elephants carved from illegal Ivory are displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

A cabinet displaying various items including carved Rhino, Walrus, and Elephant Ivory is displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

Rhinos carved from illegal Ivory are displayed at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)

Illegal Elephant ivory is displayed in a cabinet at an “Endangered Species” exhibition at London Zoo on September 12, 2011 in London, England. (Photo by Dan Kitwood/Getty Images)