Assertive K9 Training Home Training


We are Certified Dog Trainers that use Positive Reinforcement Motivation.

Assertive K9 Training Home Boarding


Our kennel sits on five spacious acres surrounded by beautiful mountains.

Assertive K9 Training Home Puppies


We only breed responsibly from the finest German bloodlines.

Assertive K9 Training Home Store


Great news! You can now pay for training, boarding, and place puppy deposits online.


Home of the Thinschmidt German Shepherds

Training for all breeds of dogs

By Certified Pet Dog Trainers

Over 40 Years And Still Growing! Expanding To Las Vegas

Over 40 Years and Still Growing! Expanding to Las Vegas

Assertive K-9 has opened a new facility in Nevada! 3709 Bordley Way North Las Vegas, NV 89032 725-333-6472 We have expanded to Nevada with a new facility in Las Vegas! Our new location will provide all…

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Is Crate Training Humane?

Is Crate Training Humane?

Crate Training: Is it humane…or not? There seems to be a lot of mixed opinions and continuous debating on the topic of using a crate. This article was written to provide you with some very…

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Assertive K-9 Crash Course

Assertive K-9 Crash Course

Is your dog’s behavior driving you crazy? Does your hectic schedule prevent you from joining one of our weekly training courses? If you don’t have a lot of time and you need to get your…

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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

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

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


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