In-Home Dog Trainer in Frederick MD

Hi everyone! My name is John Tomassoni, and I am an in-home dog trainer in Frederick MD and owner/head trainer at Confetti Dogs of Frederick, Maryland. Thanks so much for visiting my site! If you want to learn a little bit about my story, please read on below! If you’re ready to begin a new chapter for you and your dog, please CLICK HERE and let’s get it going!

Confetti Dogs serves dogs, owners, and their families in all of Frederick MD and the surrounding areas, including Urbana, Middletown, Ballenger Creek, Hagerstown, Myersville, Brunswick, New Market, Mt. Airy, Germantown, Gaithersburg, Potomac, Leesburg VA, and more.

For in-home dog and puppy training, I serve all areas within approximately 30 miles or less from Frederick. My virtual puppy training program can be completed from any location via Zoom and other digital tools. Schedule a brief phone call or a FREE in-home evaluation to get started. If you are ready to chat now…give me a call or send me a text at 240-587-5020

Brief Intro

I grew up in Bowie, Maryland…and I’ve lived in Maryland for most of my life. I spent 16 years as a high school teacher in both Maryland (3 years) and Orlando, Florida (13 years). I also spent 7 of those 16 years coaching high school lacrosse at the two schools I worked at. During the final 5-6 years of my teaching career (before I decided to transition to working with families and their dogs full time), I began developing a deep love and passion for dog training and behavioral modification as I navigated through my own journey of dog ownership. I was teaching full-time and working with dogs part-time in the evenings (dog walking, training neighbor’s dogs, and at a board & train facility in Orlando) and I became very interested in switching to a full-time dog training career…but I wanted to learn more…study more…practice more…help more people, etc.

I’ve been very fortunate to have connected with a few mentors who have taught me so much over the last handful of years and who have genuinely believed in me and in my abilities to transition into training full time. They’ve challenged me and pushed me along the way and continue to do so! This has meant a whole lot to me…and I hope I can replicate that for other future dog trainers who want to pursue their passion. So…here we are now, in 2023…and I’ve been training dogs here in Maryland for close to 2 years since we moved up to Frederick from Orlando. Confetti Dogs stands tall with a vision to walk alongside people & families who are genuinely struggling with their dogs!

childhood dog lying on a rug


Ever since I was a kid, I’ve cared deeply about dogs. My childhood dog “Tiffy” (a mixed breed) was truly my best friend growing up. I honestly had no idea how to train dogs back then, but I sure knew that my dog enjoyed cheese and that she loved me! Other than that, she was quite the rollercoaster!!! Tiffy would go berzerk when the mailman arrived, she would destroy furniture all throughout the house, scratch up the doors, get loose and run away (many times), etc. Near the end of her life, she even had a nasty mouth infection which came about from having a small piece of a chicken bone lodged and hidden deep in the back left side of her mouth (for weeks) after she had gotten into the trash! One of my favorite (but also slightly “questionable”) memories of Tiffy was when she jumped through the second story screened window of our house and landed in the bushes below…all to meet me at the bus stop up the street and walk home with me! I mean…she truly was wild and potentially very dangerous to herself and others! It was crazy! But…most importantly, she was also possibly my favorite thing in the world at that time and my fond memories of her persist to this day!

The Family

Fast forward to 2023. I have been married to my forever lovely wife, April for almost 17 years. We have 4 incredible kids (ages 8-15). They are all part of why I do what I do and they mean so much to me…more than they could ever know (I’m secretly hoping they will read this page)! It means so much to me that they have been supportive of me over the last couple of years as I’ve been working hard to open this small business and as I’ve been building it up from the ground! We spend our days with our two German Shepherds: Fonso “the legend,” and Nova (11 and 4) along with the absolute toughest dog in our house, a cute and spitfire little 10 pound 1 yr old Chihuahua / Frenchie mix called Ruby (1). Our 3 wonderful dogs have reminded me of my childhood love for and curiosity about the species. I’m incredibly grateful for the way they love our family, how they keep us active and healthy, the way they come and lay at our feet when we are going through hard times, how ridiculously funny they can be, etc. Dogs understand so much more than we give them credit for and I really want to honor that with my choices as a dog owner, a dog trainer, and a member of our community!


Overall, I’m a pretty laid back, dedicated, and hard-working person…and I care a lot about my family and my community! I’d love to support you in your efforts to bring your dog into a good, healthy state of being that adds to the fullness of your life! Are you having some serious challenges with your dog to where it is affecting your quality of life? I’d love to help you with some real-life, useful solutions and help lay a strong foundation for the future. I look forward to hearing from you and thanks for reading!


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