I know how you feel. We had a stray dog show up July 4th, terrifed of the fireworks going off. We tried to find his owner, but failed, so we adopted him. This dog was awesome!!!! The vet estimated him to be around 4 years old, he was housebroken, VERY mellow, knew commands and some tricks, and fit in perfectly with our dog. He got sick last Thursday and we took him to the vet who sent him back with some medicine. Friday he was much better, as he was early Saturday (the 2nd). About 10:30 last Saturday morning, he started acting strange, so hubby ran him to the vet while I watched the store. Again, they couldn't find anything wrong with him. About 1/2 hour after they got back, he started vomiting, and did it 6 times. I called them back and asked what I should do. They told me to bring him in, so we did. Didn't hear anything Saturday, Sunday, or all day Monday. I figured he was on his way to recovery. At 8:30 Monday the vet stopped by and said that Marley had died. He'd been fine all weekend, and was fine at 6 that evening, but when the vet went back to check something else at 8 he looked in on Marley and he was gone. 2 months to the day that he'd found us, and he was gone. We are still devastated. Apparently he'd had a massive internal bleed and basically bled to death inside - no outward signs of what exactly was going on. Everyone at the vet's office is still in a state of shock. We'd only had him 2 months, but a lot of love grew in that 2 months.