Pets

Find out his weakness, then use it sparingly as a treat. ie my brother had a dog who melted at the smell of potato chips. Always make sure a good supply in pocket.

Sometimes old fashioned methods are reliable. I disagree with today's thinking that choke chains are cruel. It must be a good quality chain, not a cheapie that catches but one that is smooth and releases instantly. The onus is on the owner to learn a short, sharp movement - not tug or jerk, but almost like a riders hands on the reins. Pass the message down the lead and through the collar.

Enjoy, don't overthink. Read "King Solomon's Ring" by Conrad Lorenz.