Sorry to hear the peace in your house is no longer there and your baby is
turning into Mr Meany. You & Hubby MUST stop this now, it will escalate and
someone will get hurt and he will possibly get put down...the good news is...
it can be completely turned around before this happens.
No, he is not too old to be neutered, find a good, experienced bully vet and get
it done NOW, the males are an easy fix and very quick recuperation.
Next, you & Hubby immediately start basic obedience with him and establish that
YOU are alpha...not him. Be kind, firm, peaceful & loving (reward his obedience
and good behavior) and consistent. Others will be along to go into greater detail
but that's the simple and short answer. And really, it is simple...take charge and
stay in charge and everyone, including Diesel will be happy.
Diesel is very handsome, keep him in line, he deserves that, so do y'all...GOB bless!