You can find quagsire or wooper in some areas. Quagsire can be sometimes found in Mt. Silver. Quagsire is part ground and part water.
Chat with our AI personalities
its rare in the safari zone in the water at the mtn. land scape
to catch bagon, you have to go to meteor falls. find the the innermost part of the meteor falls where there is water and an isolated land at the end. you can see a lvl 30 bagon there.
To catch a Pokemon with a rod, you have to use the rod, then wait until a "!" appears above your character's head. Once that happens, press "a" as fast as you can before it gets away. If you land the Pokemon, you get to battle it.
After you beat all eight gym leaders, go back to new bark town, and surf east on the water in front of your house. After you hit land, there will be a cave. Find your way through it, and navigate from there. There's a map to help you on your pokegear too.
You can trade, use the action replay for Pokemon Platinum, or actually catch it without the action replay. If you have completed the Sinnoh Pokedex, go and see Professor Rowan, and he will give you the National Pokedex, then you catch all the Pokemon throughout the land of Sinnoh from all the other regions due to an "outbreak". But, where to catch caterpie specifically, you need to go to Eterna Forest, west of Eterna City.