Where does “돌돌” come from?

돌돌 (Korean) comes from Korean 돌, from English dhole, from Kannada ತೋಳ, from Proto-Dravidian *tokktōẓ-.

Ancestry of “돌돌”, step by step

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