Dog Trainer Petco Animal Supplies, Inc.Dog TrainerYork, PAStage 2: Dog Trainer: Successfully run and grow the dog training business in one of Petco's Pet Care Centers with local and national marketing support, with access to internal partner resources, networking, and client acquisition through our state-of-the-art online booking and scheduling systems. Stage 1: All candidates are required to complete the 'Dog Training Instructor Program (DTIP)' to become Petco Certified Dog Trainer consisting of the following: Dog Training Apprentice: 6-weeks weeks of instructor led learning and development.