If your father does not want to full heartedly put in some serious time with a Wolf-hybrid, be totally serious and firm with the dog, and not allow ANYONE but him command the dog. Then he shouldn't get a Wolf-hybrid.<br /> <br /> But either way...<br /> <br /> I recommend a puppy, the dog will be easily broken/dominated due to small size and other such things. If you get an adult that you have no history with, and whatever then you're treading into dangerous territory for a possible attack from the dog. And I'm sure you rather not end up a hurting/dead unit, I personally don't trust older dogs that have a breed reputation of being stubborn and set in their ways. Like GSDs, Huskies, and other working breeds.<br /> <br /> If you want a big dog, I recommend a domesticated breed. Wolf Hybrids aren't exactly large anyway, unless they're bred from a large dog. I call a dog under 25 inches at the withers not a large breed dog, St. Bernards are usually between 28-35 inches and you don't usually get bigger unless it's a Great Dane freakdog. You won't usually get the wolf's height of around 32-34 inches unless you breed it to a large breed of dog.