Millions of pounds are made each year by traffickers who sell trophy animals on the black market. Big cats, hippos teeth and tortoises are among record numbers confiscated by Border Agency officials at Heathrow over the past year.
London Zoo has now been called upon to give some of them a new home and a second chance.
David Wood reports:
More top news
A luxury penthouse in Mayfair has just broken the record for the most expensive home ever sold in the UK
Simon Harris talks to the Labour politicians hotly tipped for the Mayoral race in 2016 - but only one will admit he is standing
ITV London's Political Correspondent Simon Harris takes a look at the Labour candidates vying for the capital's top job in 2016