a description of the fife animals named in this puzzle), SNOW LEOPARD (20A. Asian cat), KILLER WHALE (60A. Shamu, for one), ZEBRA (13D. Equus quagga), PANDA (30D. One of the 2008 Olympic mascots) and SKUNK (53D. Polecat) constitute the interrelated group of this Tuesday crossword. Other — BINOCULAR (3D. Like some