How do you catch howdon on Pokemon palatium?

It seems you're asking about catching a Pokémon named "Howdon" in a game called "Pokemon Palatium". There's no official Pokémon game called "Pokemon Palatium" or a Pokémon named "Howdon". It's possible you're referring to a fan-made game or a misspelling.

To help you further, please tell me:

* What game are you playing? Can you provide the full name of the game?

* What is the actual name of the Pokémon? Is it "Howdon" or something else?

* What information do you have about this Pokémon? What type is it? Where is it found?

Once I have more details, I can try to help you find and catch it!