article_snippet.sent: These pictures capture the amazing moment when one of the notoriously slow-moving reptiles escaped becoming big cat fast food  by retreating into cat shell before scuttling off across desert sands.
article_snippet.sent: The tortoise retreats into its shell as the big cats get too close for comfort .
highlights_snippet.sent: Two of the big cats approach the little reptile as the little reptile scuttled across the sands .
  
highlights_snippet.sent: But the big cats were denied the big cats meal and forced to wander off disappointed .