© Licensed to London News Pictures. 26/03/2014. London, UK. Mum Melati checks on the cubs as they explore the outdoor paddock.  Three of the world's rarest tiger cubs have made their public debut just in time for Mothers' Day, exploring the outdoor paddock of their home at ZSL London Zoo's Tiger Territory. The seven-week-old cubs joined mum, Melati, when she ventured outside to stretch her legs on Wednesday afternoon, and appeared delighted with their new play area. The cubs, who won't be named until keepers know if they are boys or girls, have been spotted playing in their custom-built cub conservatory area, but this is the first time that they've ventured outside into the main paddock. Photo credit : ZSL/LNP
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