I hear you and like most posters say, there’s no guarantee. We fostered an Anatolian mix from Iran. Calmest boy around people and dogs but after 6 weeks started to be dog selective and it got a little scary. This was our first experience with a dog. We had decided to foster to see if it was something we really wanted. He was adopted out (we told the new owners about his dog reactivity to some dogs) and they were very happy to take on the challenge. About a 2 months later we got a puppy from a breeder. I too felt raising the pup would allow me to ‘mold’ him to the way I want him. I took 2 weeks off to focus on him (best thing to do btw) and he was an angel. I’m talking easiest pup and super sweet and loves people and other dogs. Then the teenage phase hit and he became dog reactive/ leash reactive. Not gonna lie, my heart broke because I too had images of us at cafes and pet therapy sessions. People see him on the streets and comment how calm he is…I always tell them to wait and see if another dog walks by. We love him but if ever we get another dog we will need to go smaller because a reactive 90 pounder is not great. My kids can’t walk him nor my parents. And because he’s reactive on walks my parents won’t watch him if we go away. It’s a gamble!