We rescued a 4 year old lab/golden mix 6 months ago, to be a companion for our 8 year old doodle. They get along well, but Buddy (rescue dog) is not well behaved when we leave the house. He routinely pulls things off the counter, bookshelves, chews things, and is destructive. This behavior has been diagnosed as separation anxiety - he does not like it when we leave. He gets plenty of exercise, has plenty of chew toys and bones, and has a companion to play with. He does not mind a crate, but keeping him in one while we work (10 hours a day with a dog walker to break it up) seems counter-intuitive. Does anyone have any recommendations? Is there a way to crate train (at age 4?) to show him that he does not need to be anxious and we are coming back?