One Happy Dog
Ranked #1 in Mundelein and #41 in Illinois
Service area: Dog sports web seminars for professional dog trainers can be attended from anywhere. Dog training classes, dog sports classes, and private dog training are available along the Chicago, IL North Shore, including Arlington Heights, Bannockburn, Barrington, Buffalo Grove, Deer Park, Deerfield, Dundee, Evanston, Glencoe, Glenview, Grayslake, Green Oaks, Hawthorn Woods, Highland Park, Highwood, Hoffman Estates, Inverness, Kenilworth, Kildeer, Lake Barrington, Lake Bluff, Lake Forest, Lake Zurick, Lincolnshire, Lincolnwood, Long Grove, Mettawa, Morton Grove, Mundelein, North Barrington, Northbrook, Northfield, Palatine, Riverwoods, Skokie, South Barrington, Vernon Hills, Wauconda, Wheeling, Wilmette, Winnetka, and surrounding areas.
Service Overview
Types of Dog Training
- Family Dog
- Competition / Agility
Specialty Focus Areas
- Basic Obedience
- Leash Pulling
- Reactivity / Aggression
- Jumping on People
- Barking Excessively
- Fearfulness
- Recall
Training Formats Offered
- Private Lessons
- Group Classes
- Video Calls
Program Formats
- Sessions Package
- Ongoing Weekly
- Intensive Program
Types of Dogs
- Small
- Terriers
Dog Training Methodology
Methods:
- ✓ Positive Reinforcement Only
One Happy Dog offers online courses and on-demand videos, providing quick tips or in-depth support through multi-week online courses in Nosework and Power Performance. They also provide hands-on classes, seminars, camps, and private training. The training focuses on building effective dog-human teams for pet dog owners and dog sports enthusiasts.
Testimonials
“We owe our Nosework career to Margaret” “Our online classes with Margaret have given us the knowledge and skills for successful competition. Edge got to meet Margaret at our NW2 trial and you can see how much he loves training with her!”
– Melissa Chandler
About the Trainer
One Happy Dog is a dog training business led by Margaret Simek, a Dog Trainer & Dog Sports Specialist with 30 years of experience. Margaret is dedicated to building effective dog-human teams and also trains other dog trainers.
The business specializes in using positive methods to achieve training results in various settings, including the obedience ring, Nosework trail, agility field, and at home. They offer a wide variety of learning formats to fit different needs.
These formats include online courses, on-demand videos, hands-on classes, seminars, and camps. Margaret’s goal is to make training effective and fun, helping both pet dog owners and enthusiasts working at high levels of dog sports.
Accomplishments
Margaret Simek has 30 years of experience training dogs and also trains other trainers. She is a Dog Trainer & Dog Sports Specialist who has dedicated her career to fine-tuning positive training methods to achieve results for pet dog owners and those working at the highest levels of dog sports.
How to Get Started!
Clients can sign up for specific classes like the Odor Confidence class by clicking the provided link. They can also explore online courses, on-demand videos, hands-on classes, seminars, camps, and private training options to find a suitable learning format.

Contact Information
Languages
- English
Misc Features
- wheelchair accessible parking
Other Services Offered
- Pet trainer