Kind of hard, living in the Pacific Northwest (USA):
My first natural choice goes with Patrat, the animal its based on lives all over North America, finding one wouldn't be to hard, trying to catch one would be a problem...
I'll go with Mienfoo, as they are based on weasels (just love them) they also live all over North America - trying to catch one isn't the hard part, it would be finding them - I know that weasels are very quiet, sneaky, fit into small spaces, and are very intelligent.... I would still search for months high and low, rain-snow-or-sunshine just to find one.
Once I get to be friends with Mienfoo - we will hunt down a Patrat... and 4 other Pokemon I like that would live in the Pacific Northwest (otters Buizel, raccoons Zigzagoon)
once I get my full team of 6 I would probably be like a researcher/doctor/scientist and just try to learn and study other Pokemon the wild, I would probably spend my entire life near the woods. I would either try to buy a cabin in the woods or a house closest to the wild as possible