2. Being a dog, it doesn't quite know where its waste should go, and it amasses to immense proportions before NASA send personnel to clear it. Unfortunately this person is a dolt and just flings it into space. It becomes another orbital mass which causes a pretty light display, and creates mass confusion that the anti-christ is coming in Southern America.
3. People start to get extraordinarily jealous that a dog gets sent into space and they don't. They riot in Japan, Australia and Russia.
4. Without my favourite shoe, which coincidentally happens to be an integral part of my only pair, I am forced into homelessness. I can't get a job because I don't have a shoe, and I can't get another shoe because I haven't any money (and besides, it's my favourite). Instead I become a bum, and start haranguing the idealistic young teens which go near my underpass.
5. The dog meets some friendly extra terrestrials and learns to communicate. Soon canine and alien are set to wage war against the planet which enslaves one of its most intelligent species.
(n.b - whilst not quite what required of me, I thought I would have fun. I'd actually neglected to see the "cyber" part of space...)