vulpine
Any of certain canids called foxes (including true foxes, arctic foxes and grey foxes), distinguished from canines, which are regarded as similar to dogs and wolves.
The family Canidae^([sic]) consists of two main subgroups, the vulpines (foxes) and the canines (wolves, coyotes, jackals, and dogs), and some intermediate “fox-dog” forms from South America.
A person considered cunning.
Where it comes from
Borrowed from Latin vulpīnus (“foxy, fox-like”), from vulpēs, earlier volpēs (“fox”), from Proto-Indo-European *wl(o)p- (“fox”). Cognate with Welsh llywarn (“fox”), Ancient Greek ἀλώπηξ (alṓpēx), Armenian աղուէս (aġuēs), Albanian dhelpër, Lithuanian vilpišỹs (“wildcat”), Sanskrit लोपाश (lopāśa, “jackal, fox”).
Adapted from the Wiktionary entry vulpine (CC BY-SA 4.0).