He's absolutely adorable! Yeah, a little fill flash would have helped, but his expression wins me over regardless. Reminds me of the dog from the tv series Wishbone.
nice composition. His face is kind of dark. the pic would have benefitted from using layers to lighten just his face without lighteneing the background. Cute dog!
You're FG is way to dark and your BG is way to bright. When outside and shooting something like this you might want to try using your flash on a low exposure so you don't get a washed out image but it's bright enough to lighten up your subject.