Upload & Sell: On
Welcome to FM.
One of the many nice things about Critique is you will get honest criticism and suggestion. And different folks seeing different elements, offering different suggestions.
I think these are two fine images.
Technically they are sharp, colorful, good action images that convey the frolic of the dog. The choice of DOF is good, the BG and foreground compliment rather than detract from the subject. I think the subject is well-positioned in the frame, if a tad tight on top on the second image. However, that also speaks to his being up on his hind legs, so the critique is minor if worth even mentioning.
Exposure is tricky and I imagine you have some truly blown out areas in both images. perhaps more in the second along the fronts of the lower legs. I would try to recover some detail. Shown to non-photographers, I am sure you get nothing but smiles.