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Achieve Your Dog’s Best Behavior From a Certified Dog Trainer & Behavior Consultant

Certified, Skilled & Professional

Certified IAABC Behavior Consultant
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We can help with…


Anthony is a Certified Dog Behavior Consultant by the IAABC and specializes in working with aggressive behavior, using a humane approach.


Qualified help for fear, anxiety, reactivity, impulse control issues, aggression and much more.


If your dog barks and/or lunges at dogs, people, vehicles etc., Anthony can help you! As a Certified Behavior Consultant and Trainer, one of Anthony’s areas of expertise is helping dogs with reactive behavior.

dog sitting


Set your dog up for success with one-on-one training offered in the comfort of your home (or other locations you desire).

puppy silhouette


Start your puppy off right! Learn how to develop a long lasting relationship with your puppy through positive reinforcement training and play! All training is done using a kind & humane approach.


An effective way to get professional advice and coaching from the comfort of your home. We can do it all together live, in real time!


If you are seeking help due to a challenging situation or you need to make a difficult decision such as rehoming, relinquishing etc., Anthony can help you explore all of your options.


Designed to help you before you bring home your new puppy or adult dog.



If you are a dog trainer or behavior consultant seeking help on a difficult case, looking to collaborate or seeking private coaching; Anthony can help.

Speaking Engagements & Workshops

Anthony provides speaking engagements and hands-on workshops on a variety of topics for groups of all sizes.

Book cover of 20 Tips to Dog Training & Behavior Modification Success
Book cover of 20 Tips to Dog Training & Behavior Modification Success

Meet Anthony De Marinis


Anthony De Marinis

Anthony De Marinis


Anthony holding Quest

Certified Dog Behavior Consultant- IAABC
Accredited Dog Trainer- IAABC
Family Dog Mediator- Licensed Professional
Fear Free Certified Professional

✓ Certified & Professional

✓ Recommended by Veterinarians, Behaviorists & Trainers

✓ Educated in dog behavior & training

✓ Friendly, Humane, & Science-based

✓ Providing In-home & Virtual Training & Behavior Services

A Humane & Fair Approach

Our approach is to teach owners how to guide their dog to success. We do this by providing individual training and/or behavior plans that are customized based on the needs and goals of each dog and owner. All private lessons are one-on-one in the comfort of your home or other location(s) of your choice.

Owners will learn how to:

  • Train and work with their dog using reward based training concepts, fun exercises and play
  • Change behavior and manage behavior
  • Understand their dog and why their dog does what he or she does
  • Develop an enjoyable relationship with their dog
  • Set their dog up for success in and out of the home
  • Create clear and consistent rules and boundaries
  • NOTE: We do NOT offer quick fix approaches

Our Philosophy

Training and behavior modification are provided using a variety of methods, mainly focusing on positive reinforcement techniques such as using rewards to reinforce and motivate your dog (food, play, interaction and exploration).

We follow the principles of LIMA (Least Intrusive, Minimally Aversive). This gives us the opportunity to meet the dog and owner where they are. The use of LIMA generally starts with using the least intrusive, most positive and humane approach possible for the individual dog. LIMA allows professionals to be objective and critical thinkers who decide when and how to use a variety of training and behavior modification techniques and interventions based on the individual case and situation. Just like with humans, dogs learn, work and are motivated in different ways. LIMA allows us to decide what is the best approach for the dog.

 Benefits To Our Approach

✓ Individualized approach for both the dog and owner

✓ Training becomes enjoyable for your dog as he or she gets rewarded for a job well done

✓ Uses play and enjoyable interactions to create motivation and joy

✓ Teaches skills while setting boundaries and rules in a clear and consistent manner

✓ Fosters a relationship between the dog and owner using a friendly and humane approach

✓ Proven results for both training and behavior modification for dogs of all ages and breeds

Serving Long Island's Nassau & Western Suffolk Counties

Nassau County:
Manhasset, Port Washington, Rosyln, Glen Head, Sea Cliff, Glen Cove, Oyster Bay, East Norwich, Muttontown, Jericho, Syosset, Woodbury, Plainview, Bethpage, Mineola, Garden City, Westbury, Hicksville, Levittown, New Hyde Park, Williston Park, Merrick, Bellmore, Wantagh, Massapequa

Suffolk County:
Cold Spring Harbor, Huntington, South Huntington, Greenlawn, Northport, Commack, Dix Hills, Melville

We DO NOT Service the following areas:
Queens, Floral Park, Great Neck, Hempstead, Franklin Square, Five Town’s area, Valley Stream, Lynbrook, Rockville Centre, Freeport, Long Beach, Amityville, Babylon, Lindenhurst, Deer Park, and anything east of Kings Park,  Brentwood and Bayshore.

*There may be areas that cannot be serviced due to the trainers schedule and caseload. 

*If you are not in our service. area, we offer virtual sessions and have limited appointments at our studio. 

The Canine Classroom Podcast logo

Check Out The Canine Classroom Podcast!

with Anthony De Marinis & Vinny Viola

Our Favorite Training Products

photo of neon orange Freedom Harness

Freedom Harness

The Freedom Harness is our favorite front clip harness!

photo of Voila ultimate treat pouch in charcoal

Voila Treat Pouch

Fully synthetic treat pouch that is easily washable. Get 10% off with Promo code: ANTHONYDEMARINI

dog wearing sidekick head halter in blue

Sidekick Head Halter

The Sidekick is our favorite head halter for those who pull a little to much.

Professional Testimonials

I have referred countless dog guardians, as well as dog pros to Anthony, as I truly trust his talent and knowledge to work with a wide range of behavior problems, especially in aggression cases. He is professional and compassionate with both the humans and animals that he helps, and is genuinely talented at working with “both ends of the leash.” Whether you just adopted your first puppy, have a behavior issue or you have been training dogs for years, I can highly recommend Anthony as a wonderful resource for all your dog training and behavior consulting needs!

Micheal Shikashio, CDBC
Founder of

Anthony DeMarinis has quickly risen to the top of the dog behavior field, consistently proving himself to be one of the most ambitious, dedicated, passionate, insightful, and competent professionals in the dog training world. It has been a personal honor to mentor him, have him be among the first Licensed Family Dog Mediators in the United States leading a paradigm shift in the profession, and to be able to call him a friend.

Kim Brophey, CDBC, Applied Ethologist
Author of Meet Your Dog
Founder of L.E.G.S. Applied Ethology Family Dog Mediation Course

Anthony De Marinis is a highly educated and skilled behavior professional who I am privileged to call a mentor. No matter how much education one has, making the jump to more complex behavior work can be intimidating without qualified support. Support doesn’t get much more qualified than Anthony with his impeccable credentials, immense education and training, and extensive experience. If all that wasn’t enough, he is kind, open-minded and easy to talk to. I’m grateful technology makes it easy to access long distance support, and if you are looking for an extra set of eyes on a case, a second opinion, or even help creating a plan, I recommend Anthony without hesitation!

Shelly Wood, KPA-CPT

Anthony was instrumental in offering me feedback when I was first getting started with my private dog training business. As aggression is not my area of expertise, Anthony helped me work through two challenging cases. Anthony acknowledged my own experience and included that in his strategy with both cases. It comes across in his communication that Anthony is passionate about his work. His interpersonal and dog training skills are top notch. Anthony is not only a problem solver, he enjoys connecting with other professionals. He is open to listening and sharing ideas and strategies, something we need more of in the dog training world.

Graham Buck
Buck's Best Dog Training

I refer to Anthony regularly and I also regularly consult with him when I need advice, a different point of view or just someone to talk a tough case through with. Anthony is always kind; responsive and most importantly, I walk away with great ideas and options to help my clients. Whether you are looking for basic skills or have a serious behavior issue, I highly recommend Anthony and have the utmost confidence in him.

Certified Dog Behavior Consultant- IAABC

As his first mentor, I have known Anthony since he started his journey as a dog trainer and behavior consultant. He has quickly become a very accomplished and gifted dog professional. He is an avid questioner and learner who has amassed a deep and wide range of skills. He has demonstrated his ability to teach those skills to his clients, and he brings kindness, a sense of humor and emotional intelligence to everything he does.

Vivian Arzoumanian, CDBC, CPDT, CBATI, PMCT2
Certified Dog Behavior Consultant- IAABC

I connected with Anthony via a dog training group we are in. Over time as I have gotten to know Anthony better, I have sought his help with behavior cases including one of my own dogs and dogs of clients. I am grateful for his expertise and help!

Elizabeth Droke, ADT-IAABC

I worked with Anthony virtually to consult for behavior issues like fence barking and fence reactivity for my senior Golden Labrador, Kai. He was very thorough with my case and took the time to provide effective strategies that were not previously suggested by the other behavior consultants and trainers. As a positive reinforcement based dog training professional myself, I highly recommend Anthony and his team for training and behavior needs.

Shelly Haines

I turned to Anthony for help with a greyhound NJGAP placed. She was exhibiting some fear based behaviors and has anxiety. We had our initial consultation(virtually) which lasted over 90 minutes via Zoom. I highly recommend Anthony to anyone needing help. He was responsive, thorough and caring.

Jennifer Sigler
Founder of NJ Greyhound Adoption Program

Client Testimonials

“Anthony is the best! My 2.5 year-old rescued Pitbull, Ace, was displaying resource guarding and aggression. After working with Anthony for a couple of months both over zoom and in-person, Ace has improved so much.”

Brittany A.

“I was referred to Anthony by another trainer for aggression and reactivity in my rescue puppy. Since working with him my dog has made tremendous progress. I highly recommend anyone with a dog who has behavior problems.”

Sharyn S.

“We LOVE Anthony! He helped us so much with our two special needs rescue pups, even coming over to accommodate a crisis late on a Friday night. He’s so passionate, he’s so knowledgable, he genuinely cares about the animals he’s working with.”

Kendall B.

“We got in touch with Anthony after our now 1-year old puppy, Grace, developed some aggression towards our other dog. After our training sessions with Anthony, she has come so far! Anthony really excels at explaining different techniques and strategies for training, and he is great at making sure we understand.”

Alysia O.