I just spoke with Jane, Guinness's owner, she wanted me to post an update and thank everyone for their kindness and concern. Guinness has shown some signs of improvement at least on his right side. He's been doing water therapy for the last 3 day. They are going to continue that for another week and re-evaluate him after that. They are cautiously optimistic. He did develop a urinary tract infection, which is concerning but his mental status is good and everyone involved in his care LOVE him.
Thanks again from Jane and I for sharing your experiences.