Dogs can experience separation anxiety for a number of reasons, but it is most common in young puppies or rescue dogs.  It is defined as: symptoms of anxiety or excessive distress when they are left alone. This can lead to destructive behavior, excessive barking, house soiling, etc. Dogs may show these behaviors when their owners leave the house or even, in extreme cases, when the owner goes into another room and locks them out. In part, this is a natural instinct. The pack has gone somewhere, and the young dog is making sure they can find him again. Wild dogs…