Pawsitive Change Program Trainers

Taught by our 6 experienced Head Trainers, the Pawsitive Change Program aids in the rehabilitation of both man and canine. The first 6 weeks are focused on dog psychology and rehabilitation, while the last 7 weeks are centered around completion of the American Kennel Club Canine Good Citizen test. The AKC's Canine Good Citizen program is recognized as the gold standard for dog behavior and we are proud to say ALL our graduated Pawsitive Change dogs have earned this title.

Head Trainer, Lisa Porter was hired by Cesar Millan in 2014, to teach Socialization and Walking Courses at the Dog Psychology Center in Santa Clarita, CA. In 2015 she began assisting Cesar as a trainer for his Fundamentals of Dog Behavior 1 and 2 courses. Lisa is now one of only 6 official trainers for Cesar Millan. Working with Cesar and his trainers inspired her to open K9 Behavior College, and she has been changing dog and owner relationships for the better ever since! Lisa is MM’s Head Trainer, as well as the Lead Trainer for Pawsitive Change. She is certified by the American Kennel Club to be an AKC Approved Evaluator, able to certify dogs in AKC S.T.A.R. PUPPY, CANINE GOOD CITIZEN, COMMUNITY CANINE and URBAN CANINE GOOD CITIZEN. 

If you have any questions you can reach her at

Lia Marques was hired as a senior dog trainer at Cesar Millan’s Dog Psychology Center. The DPC is usually the last resort for some dogs with behavior issues and by working with these dogs on a daily basis propelled Lia’s knowledge immensely. By being able to rehabilitate dogs with severe behavior issues, she quickly became the go to person for other trainers to shadow and learn from. By combining her expertise of dog training and her previous career, Lia became the Dog Psychology Center Facilities Manager in 2014. Lia is the owner and head trainer of A Dog’s Life with Lia, which offers personal in-home training for both dogs and their owner’s. In addition, she offers Board and Train to the most severe cases, helping to reset dogs to their calmer more balanced state in order for them to lead a more well-adjusted life in their homes. Lia Marques is a professional member of International Association of Canine Professionals and a A.K.C Canine Good Citizen Evaluator.

Kim Erickson has the unique perspective of starting as a client needing help with her own reactive dogs, and now Kim works hard to incorporate her past experiences as a student with her knowledge and training to teach now. She believes that the transformation one can go through to be a leader for their dog can equip them with the same tools needed to lead a healthy and happy life. Kim is the owner of The Canine Republic dog training services as well as the co-founder/co-owner of SCV Pack Walk service in Santa Clarita. Kim is a certified trainer through Animal Behavior College and was hired as a Courses trainer at the Santa Clarita Dog Psychology Center in 2016, as well as assisting in Cesar Millan’s Fundamentals of Dog Behavior course.

Samantha Johnson adopted Pitbull Lily in 2014.  Lily was very reactive and training her completely changed Samantha’s life. Samantha loved learning dog psychology and rehabilitating Lily so much she changed her career and now does “everything dog!” She got her dog training certification through Animal Behavior College and owns her own dog walking /training business - Pack Life LA. For more than a year, Samantha has assisted in courses at Cesar Milan’s Dog Psychology Center. Samantha is dedicated to helping people become strong pack leaders so their dogs can enjoy a happy and balanced pack life.

Robert Villaneda is a certified dog trainer who specializes in dog behavior and reactivity. As a Marine Corps Veteran and a father of two, Robert understands how to apply structure and direction while providing love and compassion. Robert has always had a strong connection with animals from a young age. Working under Cesar Millan for three years, Robert received some of the best training and experience that is extremely unique. Being at the Dog Phycology Center, he’s helped hundreds of dogs and owners to a balanced life. Interacting with Cesar on a daily basis, Robert has gotten valuable life lessons he shares with the world.

Stephanie Taylor is the owner and head trainer at Canine Alpha, where her passion for helping people and their dogs has been able to take full effect. She is also the co-owner of SCV Pack Walk which is located in Santa Clarita, California where she has taken her passion of helping dogs to another level.