It is amazing how intelligent and gentle they can be. I think a lot of people have given them the "pitbull treatment" where they are all always viewed as dangerous and mean creatures when they really aren't. Granted, this clan is looked after, cared for, and have welcomed in this man. Very different from wild ones but they still know when they can trust and allow closer interactions with people, just like wild canine species do.
Here is an example of this with completely wild ones:
They know the man brings them food, so they will not hurt him. They may not trust him completely but they know he is an easy food source so they won't attack. They only attack when they know they have to.
And another with complete strangers on a guided tour: