Separation Anxiety is a term that gets thrown around pretty loosely. I hear from people using the phrase for a range of behaviour from a dog who is just happy to see them come home to one who follows them from room to room, barks a minute when left behind, or complains briefly about crate time. Dogs are supposed to prefer to be with us. But Separation Anxiety is akin to a panic disorder, where the dog can't cope with being alone or apart from someone, and suffers real distress. Joey here needs help managing alone time, and success will come from carefully managing his experiences alone to change his feelings.