My oldest son rescued a Rot/Shepherd mix a couple of years ago. She now weighs 90 pounds, though her target weight is 65. Funny dog, she plays fierce and nasty with the growling to go with it. Every now and then she'll break my skin, and she backs down immediately.
When my son moved out, he had to leave her behind. I joke that we got the best of both deals. Then again, was I really joking? lol
You ought to see my Dane and Pitador go at it in Doggie WWE. Looks and sounds like they’re trying to kill eash other, but neither gets hurt.