Hi there
Hoping for some practical advice. My parents inherited a terrier (that was already trained) some time ago an d absolutely adored him. He passed away 2.5 years ago and they have since got a puppy. Same breed: wire haired terrier mix (looks most like a cairn terrier). Since then they have done little to nothing to train him - other than to make sure he did his business outside. They've had him for almost 2 years, so he is no longer a puppy yet still acts like one - jumping up, biting, barking. The only kind of discipline they seem to engage in is to say "stop that" or "no!" but it doesn't work. My son - who is fine with other dogs - is terrified of this dog, to the point where he doesn't want to go to their house. I have another child due in August and I'm increasingly worried about how the dog might react to that, especially once the baby is mobile / on the dog's level. Ideally I would like to encourage my parents to take steps to avoid further upset before then.
I have no idea why they got a puppy if they weren't prepared to put the work in to train him but obviously that's a moot point now. Is there anything that can be done at this stage to try and change the dog's ways? I also feel that perhaps the dog doesn't have enough stimulation as my parents are older and don't have the energy to walk him until he's tired / satisfied (they live in a rural location but can't let him off the lead for the reasons above, plus the fact he would run away).
All advice very gratefully received.