The rules I have don't mention anything about this, and I couldn't find any answer from Googling it. Had it happen recently, and wasn't sure what to do.
When you KO a Pokémon in a way other than with an attack, (like poisoned or burned damage between turns) do you still get to take a prize card?
Also, what about if your opponent's Pokémon KOs itself? Like when it's confused?