Description by couchtuner for Buffy The Vampire Slayer Season 1 Episode 6 : While enduring the annual field trip to the zoo, Xander and several other students enter the quarantined Hyena pen and become possessed by the demonic spirit of the wild animals. When Buffy notices a significant change in Xander’s personality, she must figure out what happened and how to reverse it before something terrible happens.
Watch It Here :Buffy The Vampire Slayer Season 1 Episode 6 The Pack