Rachel rockford, Illinois 7/21/2014 1:12:32 PM I am so sorry for your loss. In 2011 after having just turned 8 years my Pembroke Welsh Corgi passed away in his sleep three days after being diagnosed with a baseball sized hemangiosarcoma on his spleen. Only a month prior we had neutered him (he was a retired show dog at that point) to help relieve him of anal fistulas. During the neuter the vet did not notice anything we needed to be concerned about. Three days before Thanksgiving we took him to the vet as he had been very lethargic and even had two seizures. The doctor gave us the bleak prognosis, said he had around 3 months left at best, and sent some mophine home with us to help if he was in pain. Three days later my poor baby boy went to bed and never woke up. His father also passed away around 10 years of age of this same horrible cancer. His father was a heavily health tested top winning show dog. Hemangiosarcoma is a silent killer and I only wish we had known his fathers fate sooner so that perhaps we could have avoided the heartbreak of losing out handsome sweetheart far too soon.