An intrepid gang of ring-tailed lemurs inspect the topping of a birthday treat during celebrations at Edinburgh Zoo, Scotland on Wednesday. The Royal Zoological Society of Scotland (RZSS), the charity that owns the zoo, turned 100 on March 18, 2009. The Society was set up back in March 1909 by Thomas Gillespie, an Edinburgh lawyer who had the idea of creating a zoological park for the people of Scotland. Gillespie's vision was finally realized in 1913 when Edinburgh Zoo was opened to the public.