Gina you are going through every pet lover's nightmare. Each time I have left a pet to be spayed/neutered or go under anesthesia for any reason I have always been uneasy until I get to check back with the vet after the surgery is over. Unfortunately I know of no reason for Merlin to have had such an awful reaction to his surgery but am hoping that very soon he will be totally back to normal. I am just wondering if this is a result of an adverse reaction to the anesthesia. Please keep us posted as to his recovery which I hope will be very soon and 100%.