Hope you don't mind if I add my wingnuts to the fray.
This is mom (Catria) an undersized Irish Wolfhound, 7yrs old now. She's trained to track wounded bear.
And this is the kid (Chevy), Catria's largest pup who is half wolf and stands 33in at the withers. He's 4yrs, a big goof and just scares the crap outa the bears, and everybody/thing that comes around. lol
They both run an average of 8miles/day and in the summer we add 2 daily swims.