I rescued a border collie/french bulldog recently that was hit by a car. She appears to be around 9 to 10 months old. We have a backyard and a chihuahua that she plays with and we do take her on walks, play with her in the back yard, and have tons of chew toys for her. When we leave, she starts chewing on shoes, the sofa (destroyed), our new wall, and well anything. It doesn't matter if we are gone a half our or leave for work. When we are home, she doesn't chew on her toys or her chew bones and seems perfectly content. We spend a lot of time with her and play with her a lot in the backyard. Today we put her outside in the fenced in yard with rawhide because we had to leave for work and I don't want her to destroy anything else. I don't know what else to do. Please help. We are desperate. I don't want her to dig a whole, escape and get hit by a car, and I want her to be happy. I read that you shouldn't crate for more than three hours, yet I keep reading that people crate their dogs while they are at work. I'm confused. Please help.