So I am fostering hopefully soon to be adopting an English shepherd. He is 2 years old. This is my first rescue. He was poorly mistreated and left outside in a small kennel from birth all the way til he was rescued I think 6 months ago. I know the breed needs exercise so I took him to a public park and saw a big dog hop out of another car and had an anxiety attack and pulled me back to my car. But he needs exercise. He’s afraid of big dogs and males. Also when I take him out to potty he only wants to do his business then come back in. Is their anyway I can get him to be more active? Are there any pointers on getting him used to the park? I’m just worried I’m not able to exercise him like he needs to be. They need atleast an hour of exercise. Any advice would be greatly appreciated.