My Lucas is very sick. Past Friday he started to throw up and grind his teeth. He would also scrub his face against the floor quite forcefully. I thought he had an ulcer, so I gave him sucralfate, called the vet and he said to give him baby food and ranitidine drops as well. Monday he was not better, so I took him in. He spent two nights at the vet because his temp was very low when we got there. While at the vet he didn't produce any black stools. A blood test was run and the vet told me that Lucas has hepatic and renal failure, that urea values are very high. He suspects lymphoma so a fine needle aspiration of the spleen was made, the results will be back next Monday. In the meantime I have Lucas home with me, I am syringe-feeding him every 4 hrs. a soup of Science Hill's k/d with water. He seems to be doing slightly better, but his stools are very dark. I again called the vet and he asked me to put some oxigenated water on the stools and tell him if they bubble. They don't, so the vet told me that means its not blood, so I have no idea what's going on. I have to take a sample to the vet so that he can try to figure out what's wrong. Does anyone know what else can cause very dark stools? Many thanks in advance. Alicia and The Precious - Matilda, Mateo & Lucas [Posted in FML 6113]