Question

I used Dig on Aerodactyl while it used Roost, and it hit. How did that happen?

Comments

First of all why did you use dig on aerodactyl?

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haha sorry, i was stalling the toxic, so i didn't really care if i hit it or not. plus thats the only non-status move my gliscor knows.

Answer 1

Because of a special mechanic with Roost. Basically, when a Pokemon uses Roost, if it has the Flying type, it loses its Flying type for that turn. It will regain its Flying type once the turn ends.

Since he lost his Flying type, you were able to hit Aerodactyl with Dig.