Ain't dissing 'em, John. I like 'em just the way they are - not nearly as big or aggressive as the ones in the upper half of N. America.
There's a name for this law/theory/hypothesis of same-class animals growing bigger the further away from the equator you get. Bears are the best example - relatively puny little things here in the South, then growing progressively bigger till you hit the ant/arctic polar bears - but it goes for deer, squirrels, and many others. Just can't recall it.