[Two Bills]

I have been a Greyhound man most of my dog keeping days. Bred them, and raced them.
So lazy, sleep 16+ hours a day, sociable, and a real pleasure to walk.
Until.
Something small moves!
Then, in most/many cases the genes kick in, and they want to go. Seriously!
The chase is so inbred, that it is nearly impossible to get it out of them.
That does not mean they all want a 'kill' at the end, for most, it's just the fun of the chase.
I had an old arthritic bitch who was grey in the face, and struggled to raise a walk towards the end, but see something move in front of her, the old ears still went straight up!
I believe you can train most dogs to be sociable animals, but inherent characteristics could still come out, if the circumstances are there to trigger them.
Most of the unruly dogs you see, are in charge of their humans.
I loved my dogs, but they all new they were bottom of the family pack, and it does not need any cruelty to get them to understand.
Just firm patience, and never letting them win an argument.
Worked for my wife training me as well, then add three daughters, and I was only one place above the dogs anyway!
JMTC.