Can Reddit help me with this picture?

Hey Reddit, my name is Daniel and I am a long time lurker. I was wondering if someone could help me edit this photo of my dog, Buddy, to make it bigger and clearer. I have moved from California to South Korea and I had to give up my dog; I was very depressed having to leaving Buddy behind and I recently found this picture on my computer. The picture is really small and pixelated; I was wondering if someone could re-size it and make it clearer. I would try to do it myself but I don't know how. Thank you for any help. Here is the image...

Thanks again for any help.

Daniel