Assertive K9 Training Home Training

Training

We are Certified Dog Trainers that use Positive Reinforcement Motivation.
Assertive K9 Training Home Boarding

Boarding

Our kennel sits on five spacious acres surrounded by beautiful mountains.
Assertive K9 Training Home Puppies

Puppies

We only breed responsibly from the finest German bloodlines.
Assertive K9 Training Home Store

Store

Our new & improved online store will be returning soon!
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Home of the Thinschmidt German Shepherds

Training for all breeds of dogs

By Certified Pet Dog Trainers

Remembering Jenn Mizgala

Remembering Jenn Mizgala

Jenn Mizgala 1973 – 2015 Today we mourn the loss our great friend, Jenn Mizgala. Jenn bravely battled a brain tumor for nearly 8 years. She worked side by side with us for over 6…

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Assertive K-9 Training Celebrates 25 Years

Assertive K-9 Training Celebrates 25 Years

We want to give a very big THANK YOU!!!!!!! To all who helped to make our event so successful and eventful! Thank you to all our hard working volunteers / employees / trainers / South…

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2013 San Diego Regional Show

2013 San Diego Regional Show

Congratulations to our big winners at the San Diego Regional Show! (9/22/13)

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It's Jennifer and Kenai. Kenai is now an OFFICIAL THERAPY DOG, here in Chula Vista/San Diego. She passed the CGC test on the first try, she also passed the therapy dog testing on the first try as well. We had...read more

Jennifer
Jeanne Smith

We purchased a beautiful, female puppy from Thinschmidt in the spring of 2013.  Having owned large breed dogs for 30+years, we knew exceptional breeding was essential in choosing a GSD puppy.  At the time, our family included a 10 year...read more

Jeanne Smith

OMG!!! You guys are by far the best. I cannot Thank You guys enough for making my trip that much more fun by me feeling at ease that my dogs were in such good hands. Not only Amazingly well taken...read more

Jennifer Plancarte
Tony

We purchased our first German Shepherd from Thinschmidt and couldn't be more pleased. I researched several different breeders not only in California but across the U.S. I couldn't be more pleased with Assertive K9 for the quality of dog we...read more

Tony

I have purchased 2 German Shepherds from this Breeder. I originally searched all over the California for the top Breeder. the dogs are so well trained at 13 weeks when you pick them up they should be in Guiness book...read more

Gary Temel