We did it for our mutt and at first I thought it was a gimmick.

This and this is our dog. Our guess was lab/pit mix, right? Blood results came back: One parent was a pure bred Chesapeake Bay Retriever. Looks very similar to a lab, so close enough. The other parent was a....poodle mix. As in 50% standard poodle, 50% mutt.

We dismissed it at first but I looked up some crosses online and his color pattern is actually pretty similar to a pit/poodle mix - you can't tell from my pictures but the white feet, chest, chin, etc are all spot on. He just has the coat of a retriever.

The third in line (they give you a list basically of the breeds in there by percentage) was a staffordshire terrier - which explains the bully breed head he has.

So while it shocked us at first, I believe it. The standard poodle genes were clear enough they went back 3 generations, and the retriever side was pure bred all the way through.

However, my parents did it on their mutt and we aren't sure about their results. But the difference is our dog had some very clear breeds - the pure bred retriever on one side, the very heavy poodle influence on the other. Their new puppy was a complete mix. They couldn't come up with anything except maybe a pug mix in the grandparents (and the only thing they knew for sure was pug based on her face/eyes, so that wasn't new). Their "best guesses" were a dozen other random little breeds, none of which looked remotely like her.

So my guess is the more of a "mutt" your dog is the less accurate it gets. But if he's clearly mixed with certain breeds you might have better luck.

So /u/clutchdeve I would say go for it only because your dog is clearly very chihuahua influenced kind of like mine was clearly retriever influenced.