This 'little' guy is in St.Jame's Missouri.
from what I understand, he's very sweet and the owner said "he's so lazy." meaning, he loves to launge around, allot. He is very gentle with their two toddlers as well. He's had NO medical anything, however.
Remember, he's just a baby right now and though most pyrs at this age are well into their training to guard livestock, he's simply chained to a tree in the backyard. For two months. In those two months we've had snow storms and sub-zero temperatures, heavy thunder storms and tarnados in that area, so... not only is there risk of seperation anxiety away from any structured pack, but to be chained, helpless with no shelter, to a tree durring and experiencing these things for the first time may put him in danger of fear of thunderstorms. He may not develope any of these two behavior problems in the future, but there is also a chance he may.
So if you are looking for a first time Pyre Owner, I'm not so sure how he'd do with them. I just can't predict anything past the sweet, calm nature all Pyrs display.