I saw one of these standing in the median off I-95 in South Carolina. It was watching traffic go by, don't know if it tried to cross the interstate or not.
Wolves are smart, social, and very strong. One wolf alone perhaps a man can fight barehanded, but a pack of three or more would require some kind of weapon. At least a good club.
What's funny is that I have an old Shepherd/Collie mongrel that makes that same face but is the friendliest dog you'd ever want to meet. It amazes that somehow early man determined that some animals will work with you and other similar-looking ones will rip your throat out; must of taken a lot of trial and fatal error.