Our golden has not been himself for about 4 months. He initially started with very bad breath, and lethargy, and fever. I took him to the vet and they sedated him to check his teeth, and saw nothing negative. He was put on antibiotics, and Pepcid. He started getting diarriha so they told me to stop the Pepcid. He got better, but once the antibiotics stopped the symptoms returned. The vet did an xray of the stomach, again negative. He was put on a stronger dose of antibiotics. Again, symptoms returned after he was finished with meds. Vet did stool sample for worms, and again negative, antibiotics were again prescribed but for longer duration. Again, symptoms returned after meds stopped. Took to 2nd vet for 2nd opinion. CBC, chemistry profile stat, x-rays were done 4DX-HW/E Canis/Lyme/anaplasma done...results all negative. He is now on Cephalexin 750 mg 2x daily for 2 months. Do you have any suggestions, I feel so sorry for him I know he is suffering. It seems to me that it is something in his mouth...he hacks, especially on exertion, which doesn't take much to exert him. At one pt in the beginning of this condition he was so lethargic he couldn't even walk, and fever was extremely high. Added symptom red eyes, and when he is feeling sick, gets aggressive possesive

