dog running towards camera on grass

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

We Can Help With…

Trainer Anthony DeMarinis

Anthony De Marinis, CDBC, ADT
Certified Behavior Consultant

Specializing in Behavior Modification for Aggression, Reactivity, Fear & Anxiety

Servicing Nassau & Suffolk County

Katie Cameron

Katie Cameron, VSA-DT
Certified Dog Trainer

Specializing in Puppy Training, Obedience & Manners

Servicing Nassau & Suffolk County


Our Team Is…

✓ Certified & Professional

✓ Recommended by Veterinarians, Behaviorists & Trainers

✓ Educated in dog behavior & training

✓ Friendly, Humane, & Science-based

✓ Providing In-home & Virtual Training & Behavior Services

Benefits of Positive Reinforcement

What is Positive Reinforcement?

Positive reinforcement means reinforcing your dog for doing the right behavior. When a behavior is reinforced, it is likely to be repeated. Reinforcement can be in the form of treats, praise, toys etc.


  • Proven results for both training & behavior modification for dogs of all ages and breeds
  • Training becomes enjoyable for your dog as he/she gets rewarded for a job well done
  • Teaches skills while setting boundaries and rules in a clear and consistent manner
  • Fosters a powerful relationship between the dog & dog owner using a friendly & humane approach
  • DOES NOT USE: physical force, intimidation, fear tactics, electric shock collars, chokers, & prong collars

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.

“My husband and I worked with Katie Cameron of De Marinis Dog training for our puppy and had a wonderful experience. Katie was patient and understanding as this was our first time having a puppy and she really took the time to work with us at our own pace. Katie taught us so many great games and techniques that helped us get our puppy on track to be a great family dog.”

Jyothi T.

If you are looking for a honest, loyal and extraordinary dog trainer & behavior consultant, then look no further. As a local Veterinarian on Long Island, I often refer dogs and puppies to Anthony from basic puppy training/socialization to severe aggression/anxiety. Anthony has a great way of approaching each dog with an open mind and gives honest answers and suggestions for owners. Working with Anthony will help open your eyes to triggers, body language and positive ideas that you may not have even considered prior.

Dr. Stephanie Waters, DVM Doctor of Veterinary Medicine
Certified IAABC Behavior Consultant
CBATI Certified BAT Instructor
Michael Shikashio's Aggression in Dogs certificate of completion photo.
Family Paws Parent Education Certified Educator