Hyena was a species of carnivore mammal native to the continent of Africa. A group of these were included in Sunnydale Zoo. Dr. Weirick, a closeted Primal, had them quarantined so he could perform a ritual and transfer their spirits into his body. However, Sunnydale High students Kyle DuFours, Heidi Barrie, Rhonda Kelley and Tor Hauer violated quarantine as part of their efforts to bully fellow student Lance Lincoln. As they frightened Lance by forcing him close to the hyenas' pit, the four were confronted by Xander Harris. Unbeknowst to them, the ritual was completed, transferring the hyenas' spirits into them.
Buffy Summers, with the aid of Rupert Giles and Willow Rosenberg tried to undo the ritual, ignoring that Weirick actually wanted the hyenas spirits and abilities for himself. He completed the predatory act and transferred the spirits into his body, turning against Willow immediately. However, Buffy fought him and caused him to fall into the hyenas' pit, only to be devoured by the savage predators.
In their initial state, as well as possessing human beings, hyenas like the fresh meat whether it is from an animal or about a human being. However, they do show disgust when the meat is cooked.
- "The Pack"