Fangs, claws, dripping blood and sex scenes...No, it's not a drive-in monster movie from the '50s; it's probably a PBS wildlife special, the kind of sweeping look into the animal kingdom that established America's public broadcaster as this country's premiere outlet for natural history films. These programs have always been staples on the PBS menu, but it wasn't until 1982 that an ongoing regular wildife series became a part of the network schedule.