6. The Pack

Complete story — includes the ending

On a school field trip at the zoo, four students sneak into a closed hyena exhibit. When Xander goes after them, all five are possessed by the hyenas' spirits. They form a pack and roam around town, acting increasingly strange. Xander refuses to study with Willow before insulting her. A piglet mascot for the school acts panicked around Xander, and he and the others later eat it. Buffy suspects that something has horribly affected Xander, but Giles blames his behavior on teenage hormones. After Xander tries to force himself on Buffy, she locks him in the library book cage. The rest of the pack attack and eat the principal. Buffy and Giles return to the zoo, while Willow guards Xander. Buffy and Giles meet the zookeeper, and together they form a plan to reverse the possession. The remaining pack finds Xander and breaks him out. Buffy lures the pack back to the zoo, while Giles discovers that the zookeeper had intended to absorb the spirits himself. When the group arrives, the zookeeper takes control of the hyenas' spirits, but Buffy throws him into the hyena enclosure. The hyenas eat the zookeeper, reversing Xander and the other student's possession.