★ 5.0 Stars From 121 Google Reviews

Aggressive Dog Training on Long Island, NY

Growling at guests, stiffening over a food bowl or lunging at the neighbor’s dog can make every day at home feel tense. Our aggressive dog training on Long Island starts with an honest look at your dog, then a clear plan for calmer, safer behavior you can keep up. Get started today with a free consultation: Rikki learns about your dog, answers your questions and recommends the right program.

Rikki Fontana of Ruff Haus K9 with a large shepherd on a leash on a quiet Long Island street
⭐5.0 Stars on Google
📹Video Updates Every Week
🌳Real-World Training
🤝Follow-Up Session Included

Check Out Our Reviews

★★★★★
Rated 5.0 from 121 reviews on Google
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Pamela H.September 2026
★★★★★

You better be ready for some magic, because that’s exactly what Rikki Fontana and the RuffHaus K9 team deliver! ✨

I own a pet camp and have had many of my clients work with Rikki, all with incredible results. But this was my first personal experience with one of my own pups—and I can honestly say, the transformation has been nothing short of miraculous.

I rescued Noelle, an abandoned 2-year-old Pit Bull who had virtually no socialization. She would become aggressive around other dogs, which was obviously a major concern with multiple dogs coming in and out of my pet camp every day.

So I called Rikki.

I had already seen the amazing work she had done with my clients, but seeing it firsthand with my own dog was something completely different.

Noelle was smiling and happy in all the videos and pics they sent and came home calm, focused, and confident. She heels like a champ, listens to commands, and—most importantly—Rikki taught her that other dogs are not a threat. 🐾❤️

That one lesson has changed everything.

Because of Rikki’s incredible skill, patience, passion, and understanding of dogs, Noelle now has the opportunity to live the happy, balanced life she deserves. And as someone who loves this pup deeply, I truly cannot put into words what that means to me.

I am beyond grateful to Rikki and the entire amazing RuffHaus K9 staff. What they do is so much more than training—it’s giving dogs and their people a chance at a better life.

Without hesitation, I can say Rikki is by far one of the most talented and dedicated behaviorist/trainers I have ever had the privilege of working with.

Thank you, Rikki, for giving my girl a second chance. We are forever grateful. ❤️🐾

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Marissa M.December 2025
★★★★★

I cannot say enough amazing things about Rikki and her training expertise. From the moment I walked in, she knew exactly how to handle my rescue, who came with both food and people aggression. Her balance of patience and assertiveness was truly remarkable to witness.

What touched me most was how deeply she loves what she does, her passion for helping dogs and owners truly shines through in every interaction. You can feel her commitment, her heart, and her genuine care the moment she starts working with your dog. It’s not just a job for her; it’s her calling, and it shows in the results.

Rikki was completely transparent throughout the entire process, taking the time to explain every step and make sure I understood not just the “what,” but the “why.” She was incredibly generous with her time and consistently professional, creating an environment where both my dog and I felt safe and supported.

Her facility is CLEAN, organized, and clearly set up with intention and care. The progress my dog has made under her guidance is nothing short of life-changing.

I highly, highly recommend Rikki for every aspect of training. She is truly exceptional at what she does, and I’m beyond grateful for her unwavering dedication and the love she pours into her work. 10 STARS!!!!!

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Mahir K.December 2025
★★★★★

Literally can’t rate Rikki highly enough! Going into training, Jack was a 14-pound nervous terrier mess — constantly oscillating between being extremely scared and acting aggressive to compensate. The little guy had been coasting through life on his good looks, but it was definitely time to learn some manners!

Coming out of it, Jack is a completely transformed pup. He’s calm, responsive, confident, and honestly the best version of himself.

Rikki is an absolute ROCKSTAR. You can tell she truly loves what she does and cares deeply about every dog she works with. She kept us updated the whole time and made sure we knew exactly how to keep Jack’s progress going once he came home.

We genuinely feel empowered with the tools to continue his training, and we’re thrilled with the results. If you’re considering training, Rikki is the best of the best!

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Rachel P.November 2025
★★★★★

I can’t thank Rikki at Ruff Haus K9 Training enough for the amazing work she’s done with my mini Dachshund, Bella. Before training, Bella struggled with possessiveness and reactivity — walks were stressful, and I didn’t know how to help her. Rikki’s patience, calm energy, and expertise completely transformed our routine. Bella now listens to her commands, follows my lead, and I can finally enjoy going on walks with her again. Rikki not only helped Bella, but also taught me how to communicate with her more effectively. Our bond is stronger than ever, and I’m so grateful for the difference Ruff Haus K9 Training has made in our lives.

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Javiana C.November 2025
★★★★★

Huge shoutout to Rikki for taking excellent care of our boy. We dropped of our five year old pit for a three week board and train program with hopes of him bettering his walking, listening and behavior while having guests over. Upon pickup, my husband and I were able to see his walking had improved 100%, it was like walking a different dog! We have been reinforcing everything Rikki instilled and continue to train everyday using Rikki’s guideline. Thank you again for helping us! We feel much more confident having Biggs back at home especially since we will be having a baby soon.

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Linda R.October 2026
★★★★★

I recommend Rikki at Ruff Haus K9 for your training needs as she is just amazing. I can now walk my hyperactive Dobermans. Rikki is just amazing. My fur babies have manners before entering home, they stay on command, heel when walking and my one dog is now create trained. And so much more. I truly recommend Ruff Haus so you can have that beautiful bond with your fur babies. We can now enjoy our walks and hikes. Off Leash and On. I highly recommend Rikki and her amazing team !!!!

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Jack C.October 2026
★★★★★

I brought my dog to Rikki Because he was very disobedient and in just a few sessions, I saw a dramatic change in his behavior. He started listening better and became much calmer. I can’t think you all enough for the amazing job you did I highly recommend your service and facility. You are a true dog whisperer.

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D. DagostinoOctober 2026
★★★★★

Can't recommend Ruff Haus K9 Training enough! We have a 2.5yr old 70lb mini Bernese mountain dog who was reactive to everything - the doorbell, dogs barking (even in tv commercials), seeing his leash knowing he was about to go for a walk, etc. He was overly excited on walks to the point where he became unmanageable on a leash due to his sheer strength and lack of listening to commands. He would follow us room to room in our home and never seemed to just relax. After 3 weeks with Rikki and her team, a brand new version of our dog has come home. He is calm, listens on command, walks right at my side with his nose up instead of to the ground, doesn't pull on the leash, doesn't follow me around the house. He is completely transformed - not exaggerating - it really is night and day. My only regret is not sending him to training sooner.

The biggest night and day result I can share is when our dog would get out of the house, he had no recall. I was 5months pregnant chasing this dog around the neighborhood trying to get him back. When we picked him up from Rikki, he was walking on the front lawn off lease and listening to commands by verbal instruction only. Truly worth every penny!!

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Tara H.September 2026
★★★★★

We have a Cunucu rescue from Aruba. She was extremely reactive to other dogs and loud trucks. My husband had exhausted all training on his own. We sent her to Ruff Haus for a two week board & train. The experience was great. Rikki taught us all the commands and we have been able to walk her off leash and are able to reduce the reactive behaviors. Staying consistent with the commands makes a big difference. Since then we have boarded our dog with Ruff Haus and she loves Rikki.

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Nicholas L.September 2026
★★★★★

Couldn’t recommend Rikki and her team enough! The difference in our puppy in the three week training class is unbelievable. Will definitely use Ruff Haus in the future for any further dog and already plan on using exclusively for any boarding needs.

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Moses D.September 2026
★★★★★

I had a great experience with the three-week board and train program! My dog Nova is an older dog, so I knew changing habits that he’s had for years wasn’t going to be easy, but he came home like a whole new dog.

His walking has improved tremendously, he listens and responds to commands much better, and one of the biggest improvements has been with his potty habits—he has not had accidents in the house since coming home. I can definitely see the time, patience, structure, and effort that went into working with him.

What I appreciate most is that he still has his same personality and excitement, but now he has much better structure and discipline. The difference from before training to now is honestly night and day.

I’m extremely happy with the progress Nova made during his three weeks of training and would absolutely recommend this program to anyone looking for help with their dog, especially anyone who thinks their dog might be “too old” to learn new habits. Thank you for all the work you put into Nova!

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ClemszkiSeptember 2026
★★★★★

My 4-month old Irish Doodle trained with Rikii for 3 weeks. BIG improvement in behavior when Sherlock came home. He used to run away from me if take him off his leash. Now- I can walk him with or without his leash. Promptly obeys commands, his social skills are much improved! Rikii is readily accessible for any questions before and after the board and train. I highly recommend Ruffhaus with Rikii to train your best bud!

Four Steps Toward a Safer Dog

1

Free consultation

Describe the growling, snapping or guarding, what tends to set it off and any bite history. Rikki listens, answers what you ask and suggests a plan shaped around your goals and your dog.

2

An honest evaluation

Rikki evaluates every dog before recommending a program. If your dog isn’t a safe fit for Ruff Haus K9, she’ll tell you directly and point you toward the kind of help your dog needs.

3

Training in the right format

Most dogs with aggression concerns do best in a longer board and train, often 4 weeks or more. Where it suits your dog and your situation, private lessons at your home are another option.

4

Hand-off and support

At pickup, Rikki coaches you through each cue, the hand signals and the gear, hands-on. A follow-up session once your dog has settled back in, with support by phone or email, keeps you on track.

Slight to Moderate, Assessed Honestly

Ruff Haus K9 works with dogs showing slight to moderate aggression. We don’t take on severe cases. That line is about safety for your family, your dog and our team, and it’s never a judgment of your dog or of you.

The word “aggressive” covers a lot of ground. Owners often use it for a dog that barks and lunges on the leash, a nervous dog that growls when cornered, or a young dog that was simply never taught boundaries. Many of those dogs aren’t truly aggressive. They may be reactive, fearful or under-trained, and each of those needs a different plan.

That’s why Rikki evaluates every dog first. If what she sees is reactivity, our reactive dog training is the better match. If a case is more serious than we take on, she’ll say so plainly and suggest where to turn next. She may decline a dog that isn’t a safe fit, and you’ll always get a straight answer about why.

One more note: if aggression appeared suddenly in a dog that used to be easygoing, a visit to your vet is a smart first step. Pain or other health problems can make a dog defensive, and that’s worth ruling out before training starts.

Walking on Eggshells vs. Clear Routines

Every dog moves at its own pace, and no trainer can guarantee how aggression will change. These are the improvements we work toward with each family.

Where you are now

  • Growling when guests come through the door
  • Stiffening over the food bowl or a toy
  • Lunging at dogs across the street
  • Snapping when handled or startled
  • Your dog is shut away during visits
  • Walks timed to avoid the neighbors
  • Nobody at home can fully relax

What we work toward

  • Guests come in while your dog settles
  • Meals and chews with less tension
  • Passing other dogs under control
  • Calmer responses to touch and surprises
  • Your dog joins family time on place
  • Walks at the times that suit you
  • Clear rules everyone in the house uses

The Kinds of Aggression We Address

Aggression isn’t one problem. A dog that guards a bone needs a very different approach from a dog that charges the fence, so the plan starts with understanding what drives the behavior.

Dog-to-dog aggression

Lunging, growling or scuffles with other dogs, on walks or with dogs in the same home. Training builds control and focus, and desensitization works on how your dog feels about other dogs nearby.

Aggression toward people

Barking, growling or charging at visitors, delivery drivers or strangers on the street. We work on calm greetings, space and manners so people can come and go without a standoff.

Food and resource guarding

Freezing, growling or snapping over food, toys, bones, furniture or a favorite person. Clear rules and consistent handling help your dog stop treating every valued thing as something to defend.

Fear aggression

A scared dog may growl or snap to make something go away. Here the work is about confidence: structure, gradual exposure and clear direction so your dog doesn’t feel it has to fight.

Territorial behavior

Guarding the yard, the front door, the window or the car. Your dog learns that keeping the house safe is your job, not its job, and that a calm response gets far better results.

Board and Train or Lessons at Home

For most dogs with aggression, board and train is the core program, and it usually runs longer: 4 weeks or more gives a dog with more serious concerns the extra time it needs. Your dog moves in with the Ruff Haus K9 family for the length of the program. It isn’t an overcrowded facility, and the number of dogs accepted each month is kept small on purpose.

Every day brings training sessions on a customized schedule, exercise in a fenced yard and calm downtime. Problems get handled the moment they surface, and three times a week you receive photos and videos so you can watch the progress yourself.

Private in-home lessons can fit some dogs, especially when the trouble happens mainly at home. Your trainer teaches you how to train your dog, right where the problems happen, and how to read your dog’s body language before things escalate.

  • Board and train: usually 4 weeks or longer for aggression
  • Desensitization work around real triggers
  • Hands-on go-home lesson and a follow-up session
  • In-home lessons where they suit your dog
Rottweiler sitting calmly between its handler’s feet during aggressive dog training on Long Island

Calm Structure Comes Before Triggers

Rikki is a graduate of Animal Behavior College in dog obedience and behavior modification, and her plans start with the basics that make every other step possible. Obedience becomes the common ground between you: heel, out, place and a reliable come give your dog clear things to do instead of reacting.

Affection, exercise, positive reinforcement and e-collar work are blended into one plan, tuned to how energetic, sensitive and expressive your dog is. The e-collar begins at zero and is raised only when needed, staying at low, humane levels. For many dogs that low-level stimulation has a calming, focusing effect.

Once that foundation is steady, desensitization work gradually softens how strongly your dog responds to its triggers, one small step at a time. Sessions then head out to parks and busy stores, so the new habits hold up beyond the yard.

If this sounds like your dog, the next step is simple. Use the button below to request your free consultation, and Rikki will talk through your dog’s history and the program she’d suggest.

Pit bull sitting on a patio and looking up at its trainer during behavior modification

Your Role Once Your Dog Is Home

Aggression training doesn’t end at pickup. The habits your dog builds with us last when the whole household follows the same rules, uses the same commands and stays consistent day after day. You play an active part, and that’s what makes the results stick.

You’ll learn exactly how the e-collar works and how to use it fairly. Simple care habits matter too: a snug two-finger fit, the collar on only while you’re with your dog, off at night, and the leash on a separate collar or harness.

Questions after you get home are normal. Your follow-up session and phone and email support are there for them, whether you live in Kings Park, Smithtown, Huntington or anywhere else in Suffolk and Nassau counties.

  • One set of rules for every family member
  • Practice the go-home lesson skills every day
  • Manage risky moments while habits settle in
  • Reach out early when something feels off
Husky, boxer and another dog holding a calm down-stay together on the turf yard at Ruff Haus K9

Aggressive Dog Training Questions

Can you train a dog out of aggression?

Many dogs with slight to moderate aggression become calmer and more predictable with behavior modification, clear structure and consistent handling at home. Aggression is worked on throughout the program, but no honest trainer can guarantee it will disappear for good. Results depend on your dog’s history, what drives the behavior and how well the family keeps up the plan. Rikki gives you a realistic picture on your free consultation.

How much does it cost to get an aggressive dog trainer on Long Island?

There’s no single number, because it depends on your dog, the program and what your dog needs. A dog that guards its food bowl and a dog that charges visitors may need very different amounts of work, so each plan is customized. Once Rikki has heard your dog’s story on the free consultation, she lays out the options and gives you an exact quote.

Do you take dogs with severe aggression?

No. Ruff Haus K9 works with slight to moderate aggression only. Rikki evaluates every dog first, and if a case is more serious than we take on, she’ll tell you and suggest where to look for the right help. She may also decline a dog that isn’t a safe fit for the program.

My dog has bitten before. Should I still reach out?

Yes, and please share the full story on your free consultation: when each bite happened, what led up to it and how serious it was. Bite history has to be disclosed so Rikki can judge honestly whether a program is safe and right for your dog.

How do I know if my dog is aggressive or reactive?

Reactivity is an outsized reaction to a trigger, like barking and lunging at a dog on the leash. Aggression means a dog is willing to growl, snap or bite to make something go away. Many dogs labeled aggressive are actually reactive, fearful or under-trained. Rikki sorts that out on your consultation, and reactive dogs have their own program with us.

Is growling in a young dog a sign of aggression?

Not always. Young dogs growl in play, when tired or when they don’t know the rules yet, and some of it is normal. Guarding, stiffening or snapping is worth taking seriously early. Our training programs start at 5 months; for younger pups, get in touch and Rikki can map out a sensible start.

Is the e-collar safe for an aggressive dog?

It’s used carefully and at low, humane settings. Every session begins at level zero, the level rises only if your dog needs it, and it’s set to suit your dog’s temperament. An Educator e-collar for your dog to keep is included with the board and train program, and you’re shown how to use it properly before your dog comes home.

Where on Long Island do you work with aggressive dogs?

Our home base is Kings Park, and we train dogs from across Suffolk and Nassau counties, from Smithtown and Commack to Northport, Huntington and Stony Brook.

Get Started Today

Claim your free consultation for aggressive dog training on Long Island. Rikki will learn about your dog, answer your questions and recommend a program built around your goals.