What you guys are forgetting is that unlike in the game/anime/whatever, you'd have to take care of it as if it were a pet. You'd have to (if applicable) feed it, wash it, groom it, pick up after it, give it a means of exercise, etc. If you're up to the task, good for you, but if you really want to have a Pokemon like Dialga or Tropius, you'd have to be willing to handle everything that comes with raising a behemoth.
>>35024476 Has the right idea.Pic related is my choice. Low maintenance and oh-so cute.