I use treats with my animal buddies. I also use affection. It’s not so much a training method as it is a way to behave with them. Rewarding them for not only doing what is asked but rewarding them for just being who they are is a powerful way to bring out the true best in anyone.
In the same way that I tell me husband how much I love him or I let a friend know how grateful I am for our friendship, showing appreciation is a pure act of goodness. It showers kindness and love on the recipient and induces receptivity and gentleness in the one giving it out.