FIERCE CREATURES (1997, UK, 93m, 12) *** Comedy dist. United International Pictures (UIP); pr co. Fish Productions / Jersey Films / Universal Pictures; d. Fred Schepisi, Robert Young; w. John Cleese, Iain Johnstone (based on an idea titled “The Fierce Animal Policy” by Terry Jones & Michael Palin); pr. John Cleese, Michael Shamberg; ph. Ian…