Please see introductory notes, May 23. In Episode 3, "The Political Animal," the glamorous Ming Ming, a giant panda from China, is courted while the lowly Partula Snail, one of the world's rarest animals, is neglected. But a handful of keepers and fellows plot a coup. In Episode 4, "Tooth & Claw," the rebellion gains a foothold but it may be too late. (Each part: 60 mins)