ive got a buddy of mine that has a few . he actually breeds them . hes got a third generation tame one that tries really hard to be a dog but sucks at it seeing as how hes a wolf . he cant bark and he is really big and freindly . wolves are not dogs they are canis lupus to be more precise . i dont remember what breeds he raised but he went through hell to get approval from the government to have them and he gets inspected from time to time . huge they are , and dont really resemble dogs at all.never seen ones that big before though, who knows?