My Favorite Premises and Plans for Techichi Dogs.

Techichi Dogs

MY Premise: The techichi type little dog is alive and well and has retained its original phenotype, even though taking on many Eurodog genes. It is the parental stock of the AKC chihuahua, not the reverse.

  1. This phenotype averages 10 pounds as opposed to the akc chi artificially held at 4 pounds,
  2. The dogs look like little deer with large eyes, upright ears and at least average length legs, usually short hair, though hairless and long haired occur and always have, long before the Southwest became part of the USA.
  3. If you have one that looks like this, get it tested at the Mars Lab. There is a fantastic comment somewhere on this site from a vet at that project who says many techichi types are turning up with some native genes.
  4. Let’s separate these guys from the AKC chis by calling them Techichis. Remember,  the more techichi-sized dogs are tested and the more native genes show up, the more different native genes may be noted, so techichis will probably end up having some of the native genetic spectrum, but not quite the same from dog to dog.
  5. I have a Facebook page where you can post photos of your techichi types and comment.
  6. There are a lot of techichis that need rescuing from shelters. Many are put there because they turn out to be 10 pounds instead of 5, because they were called “Chihuahuas” when they were sold and raised false expectations of tiny adult size in the new owners.
  7. You can spread the word about techichis as opposed to Chihuahuas by sharing your Techichi posts on your Timeline.
  8. Let’s not get too technical, all techichi types are the type they are BECAUSE they have always been out-crossed to unrelated dogs. If your dog looks like a techichi, but does not test like one, let us know.
  9. I think that the techichi should be recognized by its phenotype, whether or not it has native genes. Whatever its genes are, they will probably breed true to type- should they be bred-which is not politically cool at all right now.
  10. Maybe we could call our dogs that have been tested “Techichis” and the ones with the proper phenotype, “techichi types”. After all, until genetics came along, all the earlier people had to go by was phenotype.
  11. This little guy already is far more common than the AKC sub-type. Maybe several hundred times more common, though that is a guess based on my experience, not actual counting,
  12. Let’s get this sweetie of a dog out from behind the false “Chihuahua” label.

If enough of us flow through my website and Facebook page, someone should come along that has the proper temperament and skills -and youthful energy, to get some kind of journalism going on the subject, other webpages, and/or an association going that can reach critical mass in making the techichi type as well known as the Chihuahua. But this is already a very popular dog, even if no one recognizes it -except us.

I am really just an idea person. I got this idea that the oversized chis were the parental stock of the AKC chis and were the original native stock. I demonstrated it with the  history available from various dog books I could buy on Amazon. Now, genetic testing has confirmed native genes in the techichi types. I feel like my idea is validated properly from  two important sources, but I am 75 years old and don’t have the energy to promote this idea beyond posts in this blog, and asking people to share on my Facebook page. Somehow, I don’t think posts about oversized Chihuahuas will go viral, but even a few hundred more techichi people on Facebook is far more attention and knowledge than has ever happened, before.







Hi, your page got me interested in these dogs too and I have read everything I could find on them. I have one and would like to get her tested. You feel the Mars test is accurate for the native genes? I know that there are some articles out there about the research National Geo did on what happened to the native dogs. I have since acquired a Techichi type, and a coated Xolo. Both girls and both types came from the same stock as far as I can find. Am very interested in doing this test as I know nothing of my Techichi girl’s background, but picked the Xolo out of a litter of hairless pups and parents. I was not ready for a naked dog yet. Will try the tests and see where we go with them. I want to breed my girls at some point, tried to breed the Techichi girl to the Xolo’s father but she would not breed, but they are friends now so maybe next time. Will try to post pics.


    Caitlin Williams

    The Mars lab is building its database for Chihuahuas and Mexican hairless dogs. Every dog they test adds info. The info will become more and more statistically backed up, but it is accurate now – techichis share a recognizable amount of genes with the AKC variation on the original type.
    Thanks for asking this question. Even though the Xolo people do not teach their buyers this, the coated dogs are the real breed-they are typical Mexican dogs- Itzquintles -in Aztec. The naked dogs have a special variation on the coated gene that makes some pups hairless. The xolo breeders did not understand how the HH and Hh genes worked when they made up the breed. They killed coated dogs for 50 years, yet the hairless ones kept having hairy “throwbacks”; they could not eliminate them from the breed. Now we know, You can only get hairy dogs from hairy dogs and hairless from hairless dogs. Hairless dogs can produce hairless when bred to hairy dogs and when bred to hairless. I have article in this blog about that, but I think it is time for a new post on the subject.



Thank you for the information you have provided. Our daughter recently got a rescue puppy. At first we thought he was a Chiweenie. Then a DoxiePin. His body type wasn’t typical Dachshund. I did a DNA with Mars and included a photo. Results: no Dachsund or MinPin. 50% Chihuahua, 12% Min Poodle (no trace of that in his appearance), plus trace elements in the Chihuahua category. I spoke to a lab tech at Mars – she mentioned probably 75-80% Chihuahua with possible Manchester Terrier (same coloring black/tan), She noted that he is probably a Techichi given his deer head and body. But, Mars does not have Techichi as a gene category.


    Caitlin Williams

    Thank you for your comment. Right now, Mars calls all the dogs some percent Chihuahuas. However someone at that lab does recognize the techichi type and knows about this web page, and sends people over here. I in turn have a techichi Facebook page where you can put up photos. SO let’s get all the deer Chihuahuas we can mentioned over here and on Facebook. A better name than deer chihuahua will be needed at some point and techichi is a good name, which if you research it in spanish conquest and aztec history has a good precedent in texts and drawings. The Aztec called the deer type Chis- who mainly lived in the far Northern deserts “Techichis”. We have no ides what the locals called them, so when I did the research I decided to run with “techichi” as it has precedents and other people can use that name to research the same places I did.



I am sending off for a DNA kit for what I believe is a Techichi. However he is larger at 16 pounds. I’ve been researching this for awhile and I’ve seen a couple of dogs that he looks like. On your FB page people have posted pictures and they look like my dog.


    It is probable that he is if he looks like it. The mutation that underlies all small dogs,IGF1 cover all dog under 20-25 even pounds have the same gene. Within the size limit there are also genes that make the smallness very variable.
    Clues to the genetic history of small dogs

    Journal reference: Science (vol 316, p 112)


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