The Collaborative International Dictionary of English v.0.48:
Hyena \Hy*e"na\, n.; pl. Hyenas. [L. hyaena, Gr. ?, orig., a
sow, but usually, a Libyan wild beast, prob., the hyena, fr.
? hog: cf. F. hy[`e]ne. See Sow female hog.] (Zool.)
Any carnivorous mammal of the family Hy[ae]nid[ae], doglike
nocturnal mammals of Africa and southern Asia, of which three
living species are known. They are large and strong, but
cowardly. They feed chiefly on carrion, and are nocturnal in
their habits. [Written also hy[ae]na.]
Note: The striped hyena (Hy[ae]na striata) inhabits
Southern Asia and a large part of Africa. The brown
hyena (Hy[ae]na brunnea), and the spotted hyena
(Crocuta maculata), are found in Southern Africa. The
extinct cave hyena (Hy[ae]na spel[ae]a) inhabited
England and France.
Cave hyena. See under Cave.
Hyena dog (Zool.), a South African canine animal (Lycaon
venaticus), which hunts in packs, chiefly at night. It is
smaller than the common wolf, with very large, erect ears,
and a bushy tail. Its color is reddish or yellowish brown,
blotched with black and white. Called also hunting dog.