Rhoos leopard

A Rhoos leopard was a leopard from the planet Rhoos. Fo had captured one and sometimes made his captive Kaarks fight it. He later made Ff'ni fight the leopard, but the First Doctor stopped it by calmly facing it, making a low, guttural sound and lunging at it with his cane. The leopard fled. (PROSE: The Playthings of Fo)