Dog

I think this image would be interesting if you put three other dogs next to it. I think it cause the viewer not just to think about this dog but all dogs in general. I think you might also think about the relationships between each dog.
I think cropping this image would not get the point across. I think the edges would be too close to the dog himself and it would create too much tension. You want to have some context as to where the dog is in the picture even if it's not clear.