We Train Dogs. We Transform Relationships. In Line K9 provides balanced dog training in San Diego, including board and train and aggression and reactivity rehabilitation, throughout San Diego County: Chula Vista, El Cajon, Oceanside, Escondido, La Mesa, Poway, Carlsbad, and Santee. Your dog doesn't need more commands, your relationship needs better communication. Owner and trainer Aaron works with one dog at a time, building structure, consistency, and clear communication that holds up at home, in public, and in real life, not just in a training room. Training doesn't stop with the dog. Aaron teaches handlers how to lead and maintain results long after the program ends. The goal is simple: less frustration, more control, and a stronger relationship with your dog. Call today to request your free evaluation.