She wants a harness,will this enhance his pulling power?
I am getting different opinions on harnesses.
I don't know a dog that doesn't like to chase cats
'given the opportunity'. That's the salient bit.
I walk Jet up to the fields nearby and pass 3 local cats sat on their doorsteps. Most days they're there, especially in the morning. Of course he's previously been very keen to get them to take flight and get the prey drive going for a fun run and chase them. So, I put a check / choke chain on him and check him the second he even looks their way. Then I turn around and walk past them again and again and again and again, checking him until he ignores them. The first time it took 15 minutes. But 'ignorance' came in the end. Thankfully.
Mine is the old fashioned way. David's suggestion is a softer option and I hear they're very good (once the dog accepts wearing it). Pulling becomes uncomfortable for them, so they no longer do it. Strength wise, big dogs can out pull most people. Especially when they catch us off guard and take flight.
If Billy won't heel when you walk up the footpath, stop and turn around each and every time he pulls ahead. Head back the other way and turn around until it sinks in that it's 'your walk' and not his. Walk slow and make him comply. Eventually it'll sink in that he must heel. Of course the neighbours will think you're crackers. But it's worth 5 minutes of effort. Although, you may never get to go on that walk on that occasion.
Pack dominance. Jet's not allowed up or down the stairs, when following any family member, until they reach the top or bottom. He has to sit and stay. Then he can come 'when told', 'when allowed', once they're at the top or bottom of the stairs. Same deal with doors or gates or being allowed on beds or chairs. Sometimes you have to go 'back to basics' and teach them to be a dog. It's a little bit of effort for a big return.
When I'm up the fields Jet runs ahead. I let him do that. But I just change direction and randomly walk off the opposite way. I do that every time. He has to pay attention and follow me. It's 'my walk'. Not his. Eventually, he stays closer and pays more attention. I'm the pack leader. He must comply. You can see him paying attention and coming back to me in that backpack video.
He won't go too far away now.
As for the backpacks and harness.. One is for carrying my lunch and my coat for when it rains and the other (with the security labels) is for when he's left on guard duty. The wife thinks I'm nuts.
I wouldn't dispute that. Jet barks at strangers and just looks through people he knows. Burglars.. Would you take the chance?
He's yet to fill out. But being black enhances his 'colgate smile'. That'll deter most times. I don't keep a dog to bark myself.