Maggie Marshall Dog Training

MMDT is a small company consisting of Maggie, the owner and trainer; and Jenna, her assistant trainer and pet sitter, who also handles scheduling and billing. Maggie has been training dogs for 10 years and participates in continuing education yearly to stay up to date on the latest and greatest information and techniques. See below for Maggie’s resume.

MMDT offers classes at her facility, workshops for dog owners, pet sitting for training clients, playgroups, consulting for other dog-related businesses and private one on one training at your home for any dog issue from housetraining to aggression. Maggie trains pet dogs with humane techniques and positive reinforcement. Pet dogs do not include dogs that live in backyards, service dogs, or protection trained dogs.

The service area is Duval, Clay and St. Johns counties. Appointments are held Monday - Saturday with times ranging from 9 am to 8 pm.

MMDT prides itself on a reputation of great customer service, effective training, and the flexibility to meet almost any need; meeting you the day you get your puppy, helping you choose the right dog and integrate it into your family, handling complicated family and dog dynamics, and sitting for dogs that no one else can handle.

Within this website, all your questions should be answered. You can find group class days and times, prices for various services, and even Maggie’s availability for training. Blog posts contain valuable free information, as well as the MMDT Facebook Page and Groups and the YouTube Channel.


  • Owner of MMDT Services, LLC

  • Bachelors Degree in Psychology.

  • Certified in Pet CPR and First Aid.

  • CBCC-KA: Certified Behavior Consultant-Canine, Knowledge Assessed.

  • CPDT-KA: Certified Professional Dog Trainer, Knowledge Assessed, Certification Council for Professional Dog Trainers.

  • ABCDT: Certificate of Dog Training, Animal Behavior College.

  • AKC Canine Good Citizen Evaluator

  • Mentored by Bob Hammesfahr, owner of Behavior Training for Dogs.

  • Winner of the 2014 and 2015 Angie's List Super Service Award,voted Best Trainer in the City in 2017 by Jacksonville Magazine, Finalist in 2018 Bold City Awards Voted Best Trainer by Jacksonville Magazine in 2019.

  • Featured on Channel 4 Morning LIVE, in reports about both dog attacks and dog safety.

  • Safety Patrol Staff for National Event, Strutt Your Mutt by Best Friends Animal Society, 2016, 2017, 2018.

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My 3-month old fluffball growled at my husband the very next day I brought him home. It turned out he was a resource guarder, and he didn’t like his toys taken away or being touched while chewing his toys. During the private session with Maggie, she showed me step by step how to work on desensitizing and counterconditioning his reaction around toys. She also showed me a variety of strategies I could use if/when he got hold of things he shouldn’t. The 2-hour session was packed with useful information, and videotaping the session allowed me to review and practice techniques Maggie taught me later on. After 2 months of daily training, I am happy to report that my pup wags his tails when I approach him while he chews his toys, and he happily drops his toys when requested. If your dog is having behavioral issues, I strongly recommend that you consult with Maggie. She is a knowledgeable, experienced, and highly skilled trainer. She is also kind, personable, and professional with excellent communication skills. She is a force/fear-free trainer who uses positive reinforcement to address behavior issues, which is shown to be safer and more effective than punishment-based training methods in scientific studies. I know it is stressful to have a dog with behavior issues, but effective training techniques can, and often do, mitigate or even eliminate problem behaviors. Give Maggie a try—she is one of, if not the most qualified trainer in the area.
— https://www.facebook.com/pg/maggietraining/reviews/?ref=page_internal