I have a 12 year old whippet who was recently diagnosed with splenic hemangiosarcoma, which is a very aggressive cancer of the blood vessels and it starts on the spleen. He had his spleen removed last month because the tumor was attached to his spleen and is receiving chemotherapy. So far it seems as though the cancer hasn't spread, but we aren't sure. He seems to be doing fine right now, although his white blood cell count has already dropped a little bit. He's acting like he used to and is gaining weight (he lost weight when he first got the cancer since the tumor was pressing his stomach). Does anyone have any personal experience with hemangiosarcoma? What should I expect? What should I look out for? How long do dogs normally live with hemangiosarcoma? The oncologist said that he might live for anywhere from 3-12 months. Any advice or information would be greatly appreciated.