Destructive behavior/house soiling/barking
Does your dog destroy things when you leave? Does your dog pee/poop in the house? Use a crate when you leave the dog alone. Crates have been proven over and over to be effective. A crate is worth every penny. Some people believe them to be cruel, but it is a naturally tendency for your dog to have a small sleeping area, a den. It is kinder than sending your dog away. If your dog is barking excessively, you need obedience instruction. Consider a trip to the vet. A medical problem can result in sudden behavior changes.