My little guy Alpha is around 5 months and has pretty bad separation anxiety. When I go upstairs to do something I'll leave him downstairs and he will start whining and barking nonstop. To me this shouldn't be a huge issue and he should KNOW that I'm only upstairs, right? I'm not sure if I'm overreacting or if he really does have serious anxiety issues. Any ideas? How do I make it easier on him?