HRH, Prince Arthur, Duke of... WTF???

He was the Duke of Connaught and Strathearn, and he died in 1942 as the last living son of Queen Victoria -- but why is he wearing a leopard on his head and shoulders?  A quick web search turns up no related stories, or any history of his having tertiary lues.

Image: For the Love of Queen Vic!, via Fuck Yeah, Victorians!