You'll have to get one trading it from Pokemon Emerald. It's located in Emerald's Safari Zone. That's the "legal" way of obtaining one. If you have an Action Replay, you can input this code to find them in any wild battle:
594F7021 3B4E81A7
77C7197D 502B8B56
On fire red you can not find snubull. But you can find snubull in Pokemon colleseum on gamecube.
route 38
You have to trade one from Emerald.
If you REALLY want a Snubull, you can go to the GTS (if you have Wi-Fi), and offer a legendary or a shiny for a Snubull. It'll get taken really quick depending on the Pokemon. But only do this if you really want one. Don't waste your good Pokemon.
Snubbull cannot be caught in Pokémon LeafGreen, it can only be traded from Pokémon Emerald. Snubbull can be caught in Pokémon Emerald's safari zone in an unlocked area after getting Pokémon Emerald's national pokedex.
Snubull usually comes as a swarm Pokemon, which you can check with Professor Oak and Mary's talk show on the Radio every day once you have obtained the National Pokedex and have defeated Red.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
Not in Pokemon leafgreen only in Pokemon Firered never ever in Pokemon leafgreen And in Pokemon firered it is rare in power plant not available in Pokemon leafgreen?
Snubull are usually found in swarms. Otherwise, they are really rare. Swarm locations and the Pokemon type can be found by listening to Professor Oak's and Mary's talk show on the radio.
Evolve snubull which you can find by asking dawns sister after elite 4
level up snubull to level 23
Use Pal Park or Evolve Snubbull at Level 23.