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**ALL ROUND PICTURES FROM SOLARPIX.COM**                                             **  UK NEWSPAPER PUBLICATION PERMITTED ONLY AFTER 7 DAYS FROM THIS CAPTION DATE**. ** NO PUBLICATION IN AUSTRALIA, BELGIUM, FRANCE, GERMANY, ITALY, SCANDINAVIA AND USA**                                                                                  Caption:  Zookeepers at ZSL London Zoo spiced up Valentines Day for Sumatran tigers, Raika and Lumpur, with hearts doused in the animal’s favourite perfume : CK Obsession..The loved-up pair were given the romantic treats as part of their daily enrichment activity, stimulating their keen sense of smell and encouraging their natural behaviours..Zookeeper Teague Stubbington said: “Tigers are territorial creatures and these strong smells encourage their natural scent-marking behaviours by making them rub themselves against the perfumed hearts. .“We’ve tried lots of different scents and spices, and CK Obsession has proved by far to be their favourite – it always gets the strongest reaction.”.                                                                             This pic:                                                                                              JOB REF:14470        SFE       DATE: 13.02.2012                                                           **MUST CREDIT SOLARPIX.COM OR DOUBLE FEE WILL BE CHARGED**                                                                      **MUST AGREE FEE BEFORE ONLINE USAGE**                               **CALL US ON: +34 952 811 768 or LOW RATE FROM UK 0844 617 7637**