a. (sb.) Zool. [f. Gr. θω-ός, THOUS + -OID.] Resembling in form, or related to, the sub-genus Thous; in an extended use applied to a division of the genus Canis including the wolf, dog, and jackal; as distinct from the alopecoid, typified by the fox. b. sb. A beast of this division.
1880. Huxley, in Proc. Zool. Soc., 6 April, 278. Thooids and Alopecoids, similar to those which exist at present, inhabited Europe during the Quaternary epoch. Ibid., 286. I am disposed … to regard Otocyon and the Thooid and Alopecoid series respectively as genera, retaining for the two latter the old names of Canis and Vulpes.
1891. Flower & Lydekker, Mammals, xi. 548. Thooid or Lupine Series [of Canines].
