fear of being alone

Question
My daughter has a rat terrier that she recently "adopted" because he was hit by a car in front of our house.  He is the sweetest little fellow, but he is so attached to her.  When we leave, he flips out.  We first left him outside in our fenced in BIG yard.  After several escapes from digging out and bursting through the hurricane fence, we started keeping him inside with my "weenie dog" while we are gone.  He has now eaten through our kitchen door, scratched up my front door, eaten the door facing off, and ripped two sets of expensive blinds off of windows.  He is a perfect pet while with us - but once we leave - he goes crazy.  We have even installed a hot wire in the backyard, and he gets out of that!  HELP!

Answer
He has separation anxiety which is fairly common in a lot of dogs that are rescued

The best thing to do here,would be to call up several trainers in your area,and ask them if they deal with separation anxiety,and there are a number of trainers that do-but be cautious of trainers that want to put the dog on medication without working on other solutions first,while some dogs that is the only option,it should be as a last resort only

Some dogs do have to go on medications,such as Prozac,but only under the direction of a vet and only after you have tried everything first-and do NOT crate the dog,unlike being destructive crating will make the problem worse