Where does “vulpīnus” come from?

vulpīnus (Latin) comes from Latin vulpēs, from Latin volpēs, from Proto-Italic wolpis, from Proto-Indo-European h₂wl(o)p- — fox, jackal.

Ancestry of “vulpīnus”, step by step

Step	Language	Word	Meaning
1	Latin	vulpēs	—
2	Latin	volpēs	—
3	Proto-Italic	wolpis	fox
4	Proto-Indo-European	h₂wl(o)p-	fox, jackal

vulpīnus — Etymology, Origin & Word History | Etymology Explorer