Alex Andes & Her Dogs

About Us

Peach on a Leash is a full-service dog training company based in Alpharetta, Georgia and serving the northern suburbs of Metro Atlanta, from Sandy Springs to Cumming. Utilizing the latest science-based training techniques, head trainer and pet behavior expert Alex Sessa, (formerly Andes) CPDT-KA will deliver the results you’re looking for. We provide your dog with a fun, positive learning experience that provides quick results and dramatically improves behavior while strengthening your bond with your dog, rather than damaging it through unnecessarily harsh techniques. Regardless of your dog’s breed or behavior issues, you’ll be amazed at how quickly your dog responds to Alex’s training.

Meet Our Team

Owner & Head Trainer: Alex Sessa

Peach on a Leash owner and head trainer, Alex Sessa, (formerly Andes) CPDT-KA, VSPDT is a pet behavior expert who has been training dogs and studying dog behavior for nearly a decade. Alex is a Certified Professional Dog Trainer through the Certification Council for Professional Dog Trainers, a certification that requires hundreds of logged training hours and passing a comprehensive exam. She is also a certified Victoria Stilwell Positively Dog Trainer (VSPDT), another prestigious certification.

She attended the University of Georgia, where she began honing her training skills while helping improve the behavior of local shelter dogs to reduce euthanasia rates. She graduated with honors in 2012 and worked as both a pet adoption counselor and an assistant dog trainer before being offered a job with celebrity dog trainer Victoria Stilwell of Animal Planet’s “It’s Me or the Dog.”

Alex traveled the world with Victoria and had the opportunity to learn from her in all facets of training and behavior for over four years before deciding to pursue her dream of launching Peach on a Leash. Their work together allowed Alex the opportunity to work hands-on with both pet dogs and working dogs, including police dogs and accelerant detection dogs. Alex is completing the prestigious Jean Donaldson Academy for Dog Trainers, commonly referred to as “the Harvard for dog trainers,” to further refine her training skills.

Alex is also active in the rescue community. She works with Furkids Animal Rescue, Atlanta Boxer Rescue, Angels Among Us Pet Rescue, Canine Cellmates, and others.

These experiences have helped her to become one of the most studied, well-rounded trainers in the area, and her results-oriented training utilizes effective and humane techniques that are backed by the latest modern behavioral science.

She shares her home with her husband Will, who is a police K-9 officer, and their beloved dogs.


Certified Trainer: Amelia Cosmas

Certified Trainer Amelia Cosmas, CPDT-KA is a passionate dog trainer and puppy expert. Amelia is a Certified Professional Dog Trainer through the Certification Council for Professional Dog Trainers, a certification that requires hundreds of logged training hours and passing a comprehensive exam. After Graduating With Distinction from the prestigious Victoria Stilwell Academy for Dog Training, Amelia was hired by her Academy mentor as a trainer. While working in the nursery school at her mentor’s facility, Amelia trained countless 8-16 week old puppies, taught group classes and trained privately in client’s homes. 

She is committed to results-oriented, science-based, and fun training. Amelia continually furthers her education and experiences in the dog training world by attending conferences and seminars as well as belonging to several professional organizations.

As a Certified Volunteer at Canine Assistants in Milton, Amelia takes great pride in helping dogs to become amazing service animals who go on to improve the lives of their recipients in immeasurable ways. Amelia is very active in this organization, currently fostering and teaching three incredible future service dogs.

She shares her home with her wonderful husband and their two awesome dogs, Rhett, a Mixed Breed and Ronan, a Golden Retriever.


Administrative Assistant: Stella Harney

Stella is our amazing administrative assistant! She supports our staff and clients, ensuring we are fast and effective communicators. Stella helps Peach on a Leash run like clockwork!

Stella has a Bachelor’s Degree in Psychology from Oglethorpe University, and has a passion for working with and helping animals. We especially love that she fosters dogs for the Atlanta Humane Society and Angels Among Us Pet Rescue!



Training Assistant: Julia Skrotzki

Julia is a passionate dog lover and the wonderful assistant for our group training classes. She is currently enrolled in the Victoria Stilwell Academy; she’ll be graduating this fall, and we can’t wait for her to show off all that she’s learned!

10 years ago, Julia moved to the US from a small town in Germany. She now calls Milton home and lives with her 3 dogs, husband and two children. Julia is also a active volunteer and foster mom at the Atlanta Humane Society.


Pet Care Manager: Ali Sullivan

Ali is our Pet Care Manager, and handles all of our clients’ pet sitting and dog walking needs. Ali is a University of Georgia graduate, and is studying to become a veterinarian.

As a former veterinary technician and dolphin trainer, she has extensive experience working with animals of all shapes and sizes. She is well-versed in the pet care space, and is dedicated to keeping the same high standards of care you have come to expect from our training programs.

Peach On A Leash Dog Logo

Our Philosophy

Alex is passionate about staying up-to-date on the latest modern behavioral science. Her methods are rooted in positive reinforcement, providing effective and long-lasting results without causing your dog any fear or pain. Just like those in the medical community take a pledge to “do no harm,” we make the same promise to our clients and their dogs.

Alex does not utilize prong, choke, or remote collars in training. She guides dogs into making appropriate choices and sets clear and consistent boundaries, providing you with the results you’re looking for without frightening your dog in the process. You don’t need harsh training equipment to achieve the results you’re looking for – you just need someone with the skills and experience it takes to train using the most modern methods!

Want more information on our training methods? Read this blog we wrote on the subject.