You cant.
But you can get a growlithe on route 202, and use a fire stone on it and it will evolve into arcanine.
You can get a fire stone at Feugo Ironworks, which is just outside Floaroma town.
You can also obtain firestones by digging around in the underground, mainly under and around stark mountain.
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In Pokemon Platinum, you can't catch an Arcanine, but you can catch a Growlithe and evolve it into an Arcanine. To catch a Growlithe, you have you use dual-slot mode with FireRed in the second slot and then you should have an 8% chance of catching a Growlithe on Routes 201 and 202 in Platinum.
I dont exactly know but you can catch him with the action replay.
.....i don't know about you, but a tiger isn't a Pokemon.....now, if your talking about Arcanine (that's the only Pokemon i can think of that can be confused with a tiger, evem though its a dog!) you have to import it from leafgreen and firered.
NO you cant catch syther in Pokemon pearl
You can't catch a charizard in pokemon pearl.
I want an arcanine and I know they evove from gralith but where do I get gralith
You can't catch Arcanine anywhere.However you can catch a Growlithe and evolve it with a Fire Stone.
neither of them is better, they are both the same, but in diamond, you catch dialga, and in pearl, you catch palkia, and you can catch different Pokemon in each game for example: you can catch this Pokemon in diamond, but not pearl but: you can catch this different Pokemon in pearl, but not diamond
you can certainly catch Dioxies in the game Pokemon pearl
You can't capture Arcanine in Leafgreen. You will need a Growlithe from Firered first then use a Fire Stone on Growlithe to make it evolve to Arcanine.
It's impossible to catch Jiratchi in Pokemon Pearl version.