The ornamental design for a dogtrainingdummy, as shown and described.
The article in which the design is embodied is a dog training dummy, sometimes referred to as a dog training bumper, which is intended to be used for training and exercising retrievers typically by being thrown and having the dog pick up the dummy and take the dummy back to the thrower, etc.
FIG 1 is a front elevational view of a dog training dummy, showing the new design, the rear elevational view being identical thereof;
FIG. 2 is a right side elevational view of FIG. 1, the left side elevational view being identical thereof;