Looks like a beautiful dog - very intent. However - the image is fairly "muddy" - which menas there are no really srong whites in this case. There are good blacks and a lot of grays, but the grays are grouped together on the tonal scale. May be better if the left side were cropped off as it adds little. I really doubt if a dog understands the concept of hope, but since it was a hard challenge to shoot.....
Without the title, the tie in to the theme would not be evident. Composition is ok. Lighting, focus, levels and DOF could be improved. As is, the subject seems flat and without emotion. Sorry to be negative, but if these elements could be improved, the photo would "pop" more and feel much more dynamic.