Joanna, I'm very sorry for your loss & will say an extra prayer for you tonight. I'm sure Oscar met my sweet Bandit at he Bridge...
We lost Bandit, our Australian Shepard after 17 great years while I was a senior in high school. Since we grew up together, his loss really took a toll on me =( He didn't die of old age, if he were sick maybe I could have prepared a bit for his passing. Our neighbor's dog somehow got into our yard & attacked poor old Bandit, he didn't stand a chance against such a young strong dog. He was much too old to withstand the emergency surgery he needed, so we had no choice but to put him down. That night I had a dream about him, he was standing on a grassy knoll by a pond- looking at me, wagging his tail (we decided no to dock it when he was a pup). It was as if he was letting me know he was OK, which made me feel a little better.
I'm 27 now & I still have his picture on my nightstand beside the bed, as he will always be in my heart =) I know Oscar will always be in your heart also, God speed sweet Oscar.