Cute! I love that you got the tennis ball in the shot. The fence in the background is distracting, but that's the only thing I wish were different. It's a good shot.
I love this picture because of the little dog especially, but I'm not seeing any obvious Opposites. Sure, I can find things that are opposite (big dog, little dog) but the picture doesn't say OPPOSITE first, and foremost. Cute shot though.
This conveys opposites well - thanks for paying attention to the challenge theme! Great focus and above all, a photo that is pleasant to look at. I'm biased as a dog lover, but still looks like a great image to me! Feels like it might be a bit heavy on the right. Either a tighter crop on the left, or a lot more room on the left would help this.
Funny picture! The background is a bit boring and distracting, though. A shallower depth of field and a higher angle to get rid of the fence would help.