While battling it, you use a Pokéball on it. If you are successful, you have caught the Pokémon.
***WARNING*** BIDOOF IS THE MOST HARDEST, MOST DIFFICULTEST, MOST UNOBTAINABLEST POKEMON IN ALL OF LIFE. YOU BEST GOT YOUR GAME ON, SON. it is evvery where levls ranging from 1 to 16. it is the easyist pokemon to catch.