40+ Years of Experience
Shelly’s “control through kindness” method is an innovative approach to obedience driven by positive reinforcement, instead of disheartening negative corrections.
It’s Shelly’s belief that it’s affection, reward, and praise that bring out the best in man’s best friend, and that every dog is an individual deserving of a training regimen tailored to their specific personality, even challenging dogs with severe behavioral problems. This philosophy acknowledges that because no two dogs are the same, no two training methods should be, either.
Ultimately, the goal is to enhance the relationship between you and your dog, making them a more pleasant, active, and enjoyable family member.

Built by Dogs for Dogs
Our state-of-the-art-training facilities each feature a 3,500 sq ft training room, indoor and outdoor play areas for break, and 24/7 personalized care.

Training Like the Pros
We are proud to be the official training facility of Derby, Rookie & Dash of the Trenton Thunder and Casey of the New Hampshire FisherCats.
These beloved pups represent the perfect blend of discipline, confidence, and charm—and their training started right here at Greenleaf.
Your dog can receive the same elevated level of care and professional obedience training trusted by the pros. Greatness isn’t just for the ballfields—it’s for every backyard, walk and living room too.

Our philosophy is simple: address the whole dog and gain control through kindness.

Dog Day School
Get ready for real, positive change in your dog's behavior.
Our Day School is a daily training program designed to instill your dog with the maximum amount of learning while allowing them to spend evenings and weekends in the comfort of your home. Problematic and dangerous behaviors like excessive barking, pulling, jumping, mouthing, biting, chewing, bolting out a door, and fearful or aggressive behavior are easily addressed by our patient and professional trainers.
Training time varies by dog, and we’re happy to discuss timeline with you before getting started.
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Drop-off and pick-up times tailored to your schedule
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Routine walks and workouts sessions throughout the day
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Unlimited private lessons with the whole family after your dog’s graduates

Boarding School
While you’re away, your dog will train (and play!).
The Boarding School program, like all of our dog training programs, is individually tailored to your dog. They’ll receive highly personalized care 24/7, with everything from food, to walks, and training carefully scheduled and monitored. The difference in this intensive curriculum, however, is that your dog will stay with us for 3-4 weeks.
This provides all training staff with the time necessary to address even the most complex of behavioral issues, to ensure the process is both fun and productive for your dog.
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Highly personalized, 24/7 care for 3-4 weeks
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Work-rest training cycles to keep training fun and productive
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Unlimited private lessons with the whole family after your dog’s graduates

Puppy Training
Puppies, like human youngsters, are little “sponges” when it comes to learning.
Like adult dogs, every puppy is a unique individual, so training must be tailored accordingly. Once your puppy is evaluated, a specialized program will be designed to provide a fun and effective way for them to interact and learn with both trainers and you.
After completing their training program and your lessons, your puppy will have excellent house and social manners and grow into a wonderful companion that’s a pleasure to have around!
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Ideally begins as soon as possible in your puppy’s life
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Individualized training plans to meet each puppy’s unique needs
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Address common puppy challenges such as chewing, toilet-training, and leash manners, while preventing future behavioral problems

CGC Certification
The American Kennel Club Standard
At Greenleaf Pet Resort, we believe true training nurtures both mind and spirit. The Canine Good Citizen (CGC) program, developed by the American Kennel Club (AKC), sets the gold standard for well-mannered dogs. Through this prestigious two-part course, your dog will master the essentials of calm, confident behavior — earning the nationally recognized CGC certification and the respect of that comes with it.
Upon successfully passing the 10-step CGC test, dogs are awarded a certificate and the official AKC CGC title.
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Strengthens the trust, communication, and connection between you and your dog.
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We go beyond basic commands, helping your dog thrive in everyday life — both at home and in public.
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A CGC title opens doors — from greater access to housing and community spaces to the foundation for therapy work, service training, or higher-level obedience pursuits.
Meet Your Dog’s Trainers

Shelly Leibowitz
Head Trainer

Matt Alteria
General Manager & Trainer Oakhurst

Jacob Welch
Training Director Millstone

Scott Kryzwicki
Training Director Oakhurst

Clarence Holdren
Trainer Millstone

Mike Snow
Trainer Oakhurst

Mary Cadigan
Trainer Millstone

Walter Petroff
Trainer Millstone

Paul Simoes
Trainer Millstone