The other day I was walking Kane and a furniture delivery truck slammed it's door behind him. Kane bolted so hard that he tore his lead from my hands and he ran like he'd been shot out of a canon. Luckily he didn't run into the street but did run around the block and he did come back home where I found him all four feet bleeding from him shredding his nails down to the quick. Problem is now he doesn't want to go outside at all and freaks out at every noise he hears. He stands by the hour looking out the window for the big bad truck or whatever. When we do go out, I have to drag him out the door and he pulls on the lead trying to get back to the house. Since we rescued him from an abusive situation a month or so ago, I don't know anything about his background, and was really surprised at this reaction since he's been out many times before, but I'm hoping someone might have some suggestions as to how to deal with this. Thanks!