The average dog grooming cost can fall between $30 and $90.3 The size and species of your pooch has the largest impact on the final bill. That’s because most professional dog groomers will price a session based on how long it takes to finish the job. If you bring in a komondor (aka Hungarian sheep dog), for instance, it’s going to take the groomer much longer to deal with all that fur. Opting for a komondor’s signature “mop” cut will likely raise the price even higher.