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Home Page Forums Darwin’s Ark 90% of DNA tiny dogs… But dog isn’t tiny

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  • #15023
    casey stanton
    casey stanton
    Participant

    I’m sorry, I promise I’ll stop asking my specific Nigel questions after this.

    Nigel’s DNA is 90% Pomeranian, Chihuahua and Yorkie (in total), 7% unknown and 2% pitbull (hmm…)

    I looked up the average size of those dogs are they are all like 6-10 pounds – very tiny toy dogs. But Nigel weighs 20 pounds…

    So, I guess it’s possible that other 10% of unknown / pit bull (hm…) is making him so huge compared to his ancestors… but is that odd? Shouldn’t he be smaller if 90% of his DNA is tiny dogs?

    #15024

    Hi Casey,

    That is intriguing. It would depend on which weight- and size-affecting genetic variants Nigel inherited. In a size prediction model we are working on releasing, Nigel is predicted to be calf-high in height relative to an average person, which is in line with his reported height but doesn’t reveal much about weight.

    As the APBT call is quite low (5% is our threshold for likely real, based on mix simulations), there is probably another breed that we cannot call yet in Nigel’s ancestry. The other sub-threshold call that we didn’t report (almost certainly not real) is 1% American Cocker Spaniel. The algorithm is trying to find a match, and I think it’s come up short for that 10%.

    That said, the breed standard weights for those tiny breeds are quite low, but from my experience as an owner of a hefty pet Papillon, and a daintier one who has put on some weight in his older age, sometimes the pet population of a breed has more variation in size and weight than the show population.

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