The ornamental design for a dognovelty, as shown and described.
FIG. 1 is a left side elevational view of a dog novelty, with the right side elevational view being a mirror image thereof, in accordance with the present invention.
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a bottom view thereof.
In the drawings, the broken line showing of ears and tail parts depicts envionmental subject matter and form no part of the claim.