Becky, I'm so sorry to hear this. Have you heard of Clomicalm? I've heard that this is used to help dogs with separation anxiety. Now some are also using it on cats to help with peeing issues. I sure hope that his medication will help him. Lots of prayers and positive thoughts are being sent his way.

One question I do have though. Does he get along well with Coco? I would think that if they were left alone together that this would help his separation anxiety.