Pokémon Crystal Tips

Catch Entei and Raikou
Well go to Azalea Town and get a White Apricorn. Give it to Kurt (guy who makes balls out of Apricorns). In the meantime, use a fast Pokemon to damage the legendary dogs (get health as low as possible). Next day get Fast Balls from Kurt(it is wise to give Kurt multiple White Apricorn), go find Entei and Raikou and throw your Poke Balls (For those who don't know, Fast Balls catch Pokemon who flee (run away) with a 4x success rate).