How do you catch the legandary hounds in FireRed?

In Pokémon FireRed, you can catch the legendary hounds—Raikou, Entei, and Suicune—by first encountering them in the wild after defeating the Elite Four. They will roam the Kanto region, so you'll need to track them down using the Pokégear's map and listen for their cries. Utilizing a Pokémon with the move "Mean Look" or "Block" can prevent them from escaping. To increase your chances of capturing them, weaken them in battle and use Ultra Balls or a Timer Ball for better capture rates.