Hi! Welcome to the "Mastiff Family". We are small in numbers right now but the more of us that hang out here the more that will follow.
I know nothing about the "American Mastiff". It sounds to me like one of those mixes I don't think I would want to take a chance on until there are plenty of sources and documentation from previous owners. But that's just me.
Regarding drool, LOL. Large dogs drool!! Mastiffs really drool!! I would suggest that you get the wife to go to a couple of dog shows with you and meet a few nice Mastiffs. The drool is actually minimal...... well mine is anyway. She really only drools after eating, drinking and playing. It's manageble, just need to keep a little hand towel handy so you can just give it a swipe.
Please keep us posted on what you find on these dogs. I just don't know how with a new breed they can advertise less hip problems and less drool...... shepards often have genetic hip problems. I don't know that they have been around long enough to have ample dogs to draw from.
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PHRottn
HRottn@PetHobbyist.com" target="_blank">My Email