Making naughty dogs nice since 1990.

K9 Trainer is Sydney’s top dog trainer and puppy school. With over 30 years’ experience working with puppies, adult dogs, rescue dogs, street dogs, wolves and more, you can count on us for dog training like no other.

Professional Dog Training
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FaithHope Love
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We worked with Liarne to help with our 6-month Cavaliar’s barking. He is so much easier because of her help and is now a well-behaved cuddle bug!
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Eoin Costigan
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Liarne is fantastic, we noticed changes in our one year old border collie within a week by implementing Liarne’s training. She has also been fantastic without ongoing communication and support. Highly recommend!
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Rayna R
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Liarne impressed me with her wealth of knowledge. You think you know dogs, until you meet Liarne. Liarne opened my eyes to the hidden language of the canine world. Liarne references relatable analogies to help better understand canine behaviour. Thank you Liarne.
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Marissa Vanessa Walker
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Constance is our lively and energetic 22 months old pup who benefitted hugely from Liarne’s K9 training. Not only did she love the lessons and Liarne’s fully stuffed with treats Kong 🙂 she responded well and retained the training which really improved her recall and help us a lot in stopping her barking at new people entering our house. Liarne’s K9 course also taught us techniques to continue to reinforce the training and adapt to Constance’s little quirks to help both of us develop in a positive direction. We’re so glad to have met Liarne, she’s a great dog trainer ♥️
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Ann Livingstone
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I highly recommend Liarne, her calm, kind demeanour is welcomed by dogs and humans alike! She is knowledgeable and an expert offering stepped solutions to address any issues. Liarne provided continued follow up and advice as required.
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michael bailey
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We went back to Liarne after working with her previously, as our dog had started developing some new unwanted behaviours. Even though we’ve since moved interstate, the online training sessions were no issue at all — she made the whole process easy and just as effective as in-person. Her understanding of dog behaviour and psychology is outstanding, and she tailored everything perfectly to suit our deaf dog. We saw real improvements and felt supported the whole way through. Highly recommend her to anyone needing guidance with their dog, especially those with unique challenges. She’s fantastic.
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Drishti Nanwani Tolani
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Liarne has been absolutely amazing. From the very quick response to my online enquiry, to the incredible quality time she spent with us, talking through everything about our dog and giving us such comprehensive advice and next steps. Her ongoing support is also incredible. I have never seen my anxious dog warm up to someone new so fast! After feeling like nothing we have been doing seems to work with our anxious dog, we finally have some clear steps to follow and a lot of hope for a giving our dog more confidence, knowing that Liarne is here to support us every step of the way! Beyond grateful and cannot recommend her enough!
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Sara Khodayari
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I can’t express how happy I am I found Liarne. I’ve been at the end of my tether with my little fur baby. I w done puppy school, Woofz app, listened to all dog owner’s advice but made no headway with our puppy’s behaviour. Liarne’s method is very natural, now that I think of it! Based on how a puppy is raised with a mummy dog and siblings. It completely made sense. She spent a lot of time basically training us to train our puppy. Although we are at the beginning of our journey, I can see the changes in the behaviour right away. Can’t recommend Liarne enough. I only wish I had found her earlier.
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Theo Zoumas
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I’ve had the pleasure of having Liarne work with me and Duke at puppy school but also with in home private training for some additional and personal feedback on how to get Duke settled into his new home and working on separation anxiety. Her care, passion, understanding and easy to understand approach makes training so much more easier and we are getting through step by step. It’s still early days but can already see so much improvement with Duke! Thank you Liarne!

Professional dog training for every breed and personality.

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Puppy school

Join our puppy school classes in Sydney, designed to socialise and train young dogs.

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In-home dog training

Book a private session in your home for training tailored to your dog’s behaviours and needs.

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Online dog training

Get expert dog training no matter where you’re located in the world via one-on-one video calls.

As seen on Channel 7

See our guest appearance on Sunrise

Watch as Liarne (accompanied by her beloved little pooch, Molly!) shares her dog training do’s and don’ts on national television.

You’re in good paws.

Liarne Henry is our Head Trainer and has trained over 10,000 dogs worldwide. With over 30 years’ experience working with dogs of all ages, breeds and conditions, we can handle even the trickiest of cases.

Our expert dog training team can help with…

  • Obedience training
  • Barking
  • Jumping, scratching, biting, growling
  • Aggression
  • Possessiveness & resource guarding
  • Toilet training
  • Walking on lead
  • Digging
  • Puppies
  • Adult dogs
  • House-training & puppy-proofing
  • Coming to you when called
  • Introducing a baby or new pet
  • Chewing & destroying items
  • Sudden mood or behaviour changes
  • Fear & phobias
  • Separation anxiety
  • And so much more!

Get 50% off healthy, hassle-free dog food at Lyka.

Frequently asked questions.

Teaching your dog healthy habits, cues, and manners is essential at any age. Dog training involves so much more than just telling your dog to sit and stay.

We use positive, reward-based training to encourage and maintain good behaviour. This also allows us to address complex behavioural issues such as aggression and separation anxiety, which can be especially common in rescue dogs.

We don’t just train puppies, either. Contrary to the popular saying, you can teach an old dog new tricks! Whether you want to change old habits or teach them some new ones, you can train your dog at any age.

At K9 Trainer, we use a positive reinforcement and reward-based method to get you lasting results. Punishing a dog, shouting at a dog, or scolding a dog are all things we are strictly against, and we never use these in our dog training. Not only does punishment not teach your dog what to do and not do, but it also creates a sense of fear in your dog that will only make matters worse.

Our dog training method was developed using research on dog behavioural psychology. This means we focus on the way dogs think, learn and process their environment. By observing and analysing the relationship you have with your dog, as well as the environment they’re in, we can quickly identify the root cause of the issue and reshape your dog’s behaviour for good.

You can check out our testimonials and Google reviews to see just how well this methodology works for every kind of behavioural issue or concern.

Yes! We offer group sessions at our popular puppy school classes in Sydney. These are perfect for training and socialising puppies, preparing them for life in the big, wide world.

Our private dog training sessions are for dogs of any age. Conducted in the privacy and comfort of your own home, this is the best option if you want personalised 1:1 training tailored to your dog’s specific needs and concerns.

We often have clients from our puppy schools book in for a private dog training session after they finish the 4-week puppy training course, as they want to reinforce all of the essential obedience training they learned in puppy school and ensure their dog learns all the right things from a young age.

Private in-home dog training is also great for addressing concerns as they arise, like if you notice your dog developing problematic habits or tendencies (anything from growling to barking, nipping and biting, digging, whimpering, chewing, jumping, chasing other dogs, resource guarding, separation anxiety and more).

You’ll find that dog training prices, including puppy school and private dog training prices, vary greatly across Sydney. Some dog trainers might only offer online training; some dog trainers might space out the training across multiple private sessions and charge you for each visit.

At K9 Trainer, you can visit us at our in-person puppy school classes in Sydney. We will travel to you for private in-home dog training. You also have the option of online dog training conducted over video call, which is popular with clients who live interstate or overseas. You can talk to us today to enquire about pricing and see which option would work best for your dog and your schedule.

Puppy school is for puppies that are 8–16 weeks old.

If your puppy is over 16 weeks old, don’t despair! It’s not too late for training; in fact, this is a critical time in your puppy’s life when you’ll want to teach them all the right habits and behaviours to help them grow into the best dog they can be. Learn more about our private in-home dog training, or talk to us today.

Yes. Separation anxiety is a very common yet complex and misunderstood behavioural issue in puppies and adult dogs. What works wonders for one dog might do nothing for another dog.

Our Head Trainer Liarne Henry has over 30 years’ experience specialising in behavioural dog training. Liarne’s methods are based on the latest research and a deep understanding of dog psychology, incorporating proven techniques into her personalised training programs for dogs with separation anxiety.

See us in action

Trusted by the industry for over 30 years.

We’re proud to have been featured on multiple major networks in Australia.


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If you’re a fan of furry friends, you’ll love our Instagram! Follow the action for tips, tricks and live updates on the dogs we’re currently working with.

Talk to us today — we don’t bite!

We train dogs all over the Greater Sydney region. We also cater to dog owners who live regionally, interstate and even overseas with our online dog training services.

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