Where does “דול” come from?

דול (Hebrew) comes from English dhole, from Kannada ತೋಳ, from Proto-Dravidian *tokktōẓ-.

Ancestry of “דול”, step by step

Step	Language	Word	Meaning
1	English	dhole	An Asian wild dog, "Cuon alpinus"
2	Kannada	ತೋಳ	the Indian wolf; "Canis lupus pallipes"
3	Proto-Dravidian	*tokktōẓ-	—