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A loftwing would be pretty awesome. Then again, i could fly around on a flygon or something too. Yeah, I'll take a flygon. It doesn't seem very evil and can always go out and hunt for its own food. And it flies. And can breath fire and stuff. And its not fat (I can't imagine how someone would get on a dragonite's back).
@Deck Knight: If you can fly on a Pidgey, how is a 4'7" (1.4 meters) Nidoking too small...?
@coolking49: I don't think Lance goes an episode in the anime without riding his Dragonite... And he just climbs up and sits on its back, like you would ride any animal.
Any specific creature from any game?
Probably the Moon Dragon from the iPod game Dragonvale. Why? It looks awesome, can fly me places, gets me a ton of money, doesn't require much care (doesn't even have to be fed) and is A FREAKING DRAGON FROM THE MOON.
Avion from Shadow of the Colossus, motherfuckers. I'm sorry, what was that? Yeah I forgot, this bird is ~140 ft long and ~130 feet wingtip to wingtip. Have fun with your pets which mine will obv. rip to shreds.
I'd say Dog (HL2), but in terms of actual animals, I'd take the Grox. I guess they're not really animals, but I'd love someone to help me with my world domination.