Drilbur, the mole Pokémon from Unova, can be found in the wild in Pokémon Go. Yes, Drilbur can be shiny in Pokémon Go! Evolution Excadrill is actually a great ground-type and steel-type attacker.

Normal (left) vs Shiny (right). Credit reddit user skinnysnorlaz They won't appear as a different colour in the field, so you have to attempt to catch them first. They of course can also appear in ...