Sometimes I think he is too much for Dolly (lab mix), when they play because he is so much larger.
My retriever/sheltie mix, Tipper, is only 40lbs compared to Jenny's 100lbs and they do really well together. They love to wrestle with each other. A couple of times Jenny has pawed Tipper too hard and he lets her know that he doesn't like it with a warning bark, and she responds really well. She is really gentle for such a big dog, and it seems like this can be said of most Pyrs. They are bred to move more slowly to not disturb sheep, etc., and are not hyper as adult dogs.
When we go to the wooded trails near my home there is this fluffball tiny dog (I'm not sure what kind, but really little) that we see often and Jenny adores this dog--wants to follow it and play with it, it's really cute to see.