It was in some dog documentary on Netflix. Wish I could remember the name!

Anyway I think that tendency to attune to us, generalized to other contexts, is part of what makes dogs so wonderful. It's not just a matter of being able to direct them explicitly, but the fact that they're interested in what we're doing, how we're feeling, what we want, etc.

All of that varies with each individual dog, of course. But it's obvious that generally, wolves and humans aren't as fit for each other as dogs and humans are.