About 2 hours ago, Elvis woke up and as he was walking he fell over. I thought he was playing until I realized he couldn't get up. I scooped him up and went to the vet which is thankfully a few blocks away...my initial fear was heart. Xrays revealed a mass near his spleen. Dr. said it may have ruptured or something which caused him to become weak and fall over. He took a biopsy and extracted about 3 vials of fluids from the mass and sent out to pathology. This isn't a 24 hour care vet so I chose to take him home so he at least had me and wasn't all alone. Dr. said he should get some relief from the drainage, put a fluid back in his neck area, and a steroid shot to help with any other inflammation. So I'm waiting now a day or two for path report. But now that Elvis is home, he still can't right himself and falls over every time he tries to walk. This has me very concerned. Can anybody shed some light on this so I don't freak every time he tries to get up? Will this abate? Blood tests taken about 10 days ago, and in late July did not reveal any problems atypical of his age, and today Doc said his heart was fine. Please....any input would be appreciated. It pains me to see him this way.