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Boreas
10-09-2019, 04:41 PM
Medium-sized dog dated 1000 AD excavated in Peru:

https://www.archaeology-world.com/peru-well-preserved-dog-remains-unearthed-in-ancient-peruvian-temple/

Milkyway
10-09-2019, 10:06 PM
It seems that these pre-Hispanic dogs are largely extinct.

(From Wikipedia):

In 2018, a study compared sequences of North American dog fossils with Siberian dog fossils and modern dogs. The nearest relative to the North American fossils was a 9,000 YBP fossil discovered on Zhokhov Island, arctic north-eastern Siberia, which was connected to the mainland at that time. The study inferred from mDNA that all of the North American dogs shared a common ancestor dated 14,600 YBP, and this ancestor had diverged along with the ancestor of the Zhokhov dog from their common ancestor 15,600 YBP. The timing of the Koster dogs shows that dogs entered North America from Siberia 4,500 years after humans did, were isolated for the next 9,000 years, and after contact with Europeans these no longer exist because they were replaced by Eurasian dogs. The pre-contact dogs exhibit a unique genetic signature that is now gone, with nDNA indicating that their nearest genetic relatives today are the arctic breed dogs - Alaskan malamutes, Greenland dogs, and Alaskan huskies and Siberian huskies.

https://science.sciencemag.org/content/361/6397/81

So it seems that these pre-Hispanic dogs were already closer to present-day dogs than to wolves (which indicates that domestication had already begun at 15,600 YBP). I wonder how could all pre-Hispanic dogs became replaced by Eurasian dogs all across the Americas (something similar happened with Amerindians in some places, though).