I've witnessed this first hand. Absolutely amazing. We got our, she's past now, German Shepard when she was 4. The prior owner came down with some freek allergy and had to rehome her.
A couple years after we had her, a mom and her 4 kids got out of their car, here at the nursery, and it was amazing. Adrian ran to the oldest girl maybe 6 or so, and lifted up on her hind legs and absolutely was hugging that child. The affection Adrian showed that child and family brought tears to my eyes.
Unconditionally, it was one of the most beautiful things I have ever seen.
Adrian was such a good dog, RIP girl.
Adrian is on the right and Lilia on the left.
Damn it's dusty in here