Britain's Prince William, Catherine, Duchess of Cambridge with their 8-month-old son Prince George and dog Lupo, are seen in this photograph taken in Kensington Palace, in mid-March 2014, and received in London on March 29, 2014. It is just the third official release of photos of Prince George. The Duke of Cambridge, the second in line to the throne, is pictured with his wife and son looking out of an open window. The smiling duchess, 32, is holding Prince George on her knee as he focuses his attention on the family pet Lupo, a black cocker spaniel pictured sitting on the duke's lap. Catherine is wearing white, while William, 31, looks relaxed in a shirt with the sleeves rolled up. George sports a light blue jumper with his name written on it, over a white collar. The picture was taken by photographer Jason Bell, who also took the official photos for Prince George's christening, last October.[Photo/Agencies]