At first, you want to run out and wait, you become human enough to speak. But then you think about it. You have a home, a loving family and do not need to work. If you become human, you become an adult (how fast a dog grows?) without any education. You forgot almost anything about your human life. And this is a good chance, you could become a freaky half-animal. No, this life is the best bet you drew.
So, you just lie and wait for your host give you food with pills. After the medicine dissolves in your stomach, you start to feel much better. There was something you has thought of... but what was this? It was some days or years ago, and does not matter now. Something about walking on two legs. You tried it - yes, you can walk this way for a short time. You Master laughed. Then you remember you are fearless and tied in clothes after struck by a car. So strange... Maybe, you were ill and finally cured now. With happy barking, you jump to play with your Master Childrens.
You lived happily dog life for twenty four years more. Sometimes, you have bad dreams, but dogs do not have time to think about dreams. You liked your Master his wife and kids. They like you too. This is all what matters. Then, one day, your life ended.
-- the end --