Only in Ultra Sun & Ultra Moon
SOS Encounter: Route 2
Surf: Route 2 (15%)
Its base catch rate is 190 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Quick Ball.
Dunsparce in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)