Thanks for replying. I seem to have been ignored for the most part.
Mocha was a year old on January 25th and was neutered at 10 months.
He is a real sweetie with me, but has a nervous nature and is suspicious of everyone else it seems. I know the biting is just him getting caught up in the excitement of the others barking and being littlest he has to find a his own way of making his presence known. We're working on it. He didn't bite my son's girlfriend today when she came over.
The potty issues are ongoing and are both pee and poo. He wakes me up to let him out at night.
During the day, he just doesn't seem to care. He uses the dog door along with the other 2 dogs and does do some of his business outside. Infact, he can go days without an accident and then just when I think he's on the upswing I'll find a poo somewhere or the sudden smell of dog pee on the stairs. When we walk him, he never does anything. I have much of the house cordoned off from him so as to limit his access to certain rooms. I think his favourite spot to pee is against the lowest stair-step or against the frame of the bathroom doorway.
He's a puzzle to me. I've had 5 dogs over the past 19 years and 1 before that and never had any problems with training them. One previous dog was a yorkie mix and she never had accidents in the house and if left for any length of time would find the tiniest scrap of paper to pee on.
He was supposed to be trained when I got him at 9.5 mths but not so, obviously. I originally thought this stage would pass once he adapted to his new surroundings. I was wrong. I am a SAHM so he isn't left on his own for any length of time.
I'll never part with him regardless.