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Hello all! :wave: New to the forum, just adopted a little rescue last month and named him Wesley. Was told at the shelter that he was a Westie mix which I thought was odd since I had not seen many Westies around my part of KY. But was told he came from another part of the state. I was curious what he was mixed with and wanted to know about how large he would grow to so I bought one of those mix breed DNA kits. Esp. since at 3 months he was around the height of a small full sized terrier all ready.

The results just came in yesterday and I was taken back a little. Results said on one side he had a bichon / newfoundland mix and on the other a chihuahua / cocker spaniel mix. I thought it was really odd because not really sure how a bichon / newfoundland mix would work? LOL being like a 10lb versus a 100lb dog?

Anywho I knew the test was prob a long shot but was curious if anyone else had experience with wrong results? Or if anyone had any weigh ins on what his mix may be? Is a newfie / bichon mix even possible? Very curious since the shelter said they were 100% sure the mom was a Westie and just didn't know what dad was. Looking at the photo below do you think that the test is right? Or should I contact them and ask them to send a follow up test or something? Really more for my curiosity, as far as I'm concerned he's mixed with 100% cute and 100% awesome but still wondering how big he will grow.

photo-1.JPG photo.JPG
 

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Welcome!! DNA is NOT 100% accurate and I don't believe some of them. I could see JRT/westie mix. or JRT with som kind of other terrier
 

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the issue with DNA tests is the fact that breeds are not really a biologically viable distinction. The way DNA testing works is to identify genetic markers called single nucleotide polymorphisms in the sample and then compare them to breed specific SNPs in a genetic database of samples from purebred dogs. the achilles heel of this is the fact that no matter how large the database gets, it is effectively impossible to track the occurrence of ALL SNPs throughout all breeds, especially due to the fact that many breeds share recent common ancestry and also due to the fact that it is possible that there are undocumented crosses within registered purebreeds....especially from the early days of dog fancy where we cant be sure that all records are 100% beyond a shadow of a doubt accurate.
 
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