Neurotic Cocker Spaniel

Question
"Six months ago we rescued a 3-year-old, female Cocker who was neglected and abused by her previous owners. She was undernourished, but had a sweet disposition. At the time we thought we were getting a wonderful dog who would fit into our family without any trouble. We live in a very large 3 bedroom apartment, so we thought we had plenty of room for her. We named her Psyche after the Greek myth (Psyche was so beautiful that Cupid himself fell in love with her).
Much to our dismay, we quickly found that she has several serious issues that are about to send me (her) to the Humane Society with frustration.
Before I explain her problems let me assure you we have been extremely patient, loving, understanding and diligent in trying to get her to be less afraid and more playful - without result.
She is afraid of literally everything - a voice loud enough to communicate with someone in another room (not yelling or arguing, just speaking loudly) will send her to hide. When the gardener comes with the leaf blower or we have a thunderstorm - she is terrified. She hides under my King sized bed and trembles so hard she literally makes the bed vibrate! Nothing we have done seems to ease her terror.
She also has what to my trained eye look like Petit Mal seizures. She will become totally motionless, drool and is completely unresponsive. After a minute or two, she comes out of it and seems to be fine (this has happened twice so far).
Thirdly, she has bonded with my husband to the point that she refuses to go out and "do her business" for anyone but him. Since he works 12-16 hours per day (self employed) this has really become a problem. We tried giving her treats everytime she "went" for someone other than him. This idea worked for a short time, but is now ineffective. She is so attached to him that she has become defiant to everyone else when he is home. She will, upon receiving a command, look at us - then go the other way! If she were a child, I would say that she is being deliberately defiant.
She does not play at all - in any form. The only commands she obeys are "sit" and "go lay down" and then only if my husband is gone!
She has snapped, and left marks, on my granddaughters face twice. The first time was shortly after we got her. Aimee "gave her a hug" so we kind of understood it. More recently, Aimee stepped over her as she was lying in the doorway. As she has done several times before, Psyche stood up just as Aimee stepped over her. Aimee fell (not on her, just next to her) and Psyche bit her.
If this wasn't enough, the past week or so her behavior has escalated in the negative direction. She has now started urinating and defecating in the house, which she never did before. Since she refuses to "go" for anyone but my husband I am at a loss. I cannot have a dog that is going to mess in my house all the time. She urinated in the house four times today and defacated twice. Each time it was shortly after one of us had taken her out without result, then left the house for a short period.
I had plans of breeding her, but with her behavior such as it is I am not sure she could handle having puppies. However, the immediate problem is that we have to either find a way to deal with her issues or surrender her. I hate to even consider this given her history, but I cannot let these behaviors go unchecked - especially the biting and messing.
What can we do to change this dog's behavior before she drives me crazy?!";  

Answer
You really need to take her to a vetarinary behavior specialist.  Her long list of problems are far too involved to deal with over the internet.  Behavior modication plus medication will likely help her.  And definitely do NOT breed her.  If you have no resolutions with the specialist, then euthanasia would likely be better than placing her in another home for the same cycle to repeat over and over again.

Here is a contact to find a specialist in your area.

American College of Veterinary Behaviorists
Dr. Bonnie V. Beaver, Executive Director
Department of Small Animal Medicine & Surgery
4474 Texas A&M University
College Station, TX 77843-4474
Phone: 979-845-2351
Fax: 979-845-6978
E-mail: bbeaver@cvm.tamu.edu