Felines have the traits of feliforms, which includes domestic cats (Felis sp.), non-domestic cats including big cats (Panthera sp.) except lions (who are classified as Aslan instead) and mongooses. Their feliform traits are visible from the shape of their ears and tail, and their reputation as stealthy prowlers.
Aak, the Great Elder, Mountain, and Waai Fu are the only anthropomorphic Felines.
Their name is derived from the Latin word for "cat," felis. Also, in English, feline is used to refer anything that is related to cats.