Dogs!
It is believed that dogs were domesticated in Siberia around 23,000 years ago, possibly while both people and wolves were isolated during the harsh climate of the Last Glacial Maximum. These dogs then accompanied the first people into the Americas and traveled with those humans who rapidly dispersed into the continent beginning 15,000 years ago.
Perri, A. R. et al. Dog domestication and the dual dispersal of people and dogs into the Americas. Proc Natl Acad Sci USA 118, e2010083118 (2021).
Image by Chippy under CC BY-NC 2.0 license
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Full disclosure, I may occasionally borrow a sentence from Will Durant's Story of Civilization. I absolutely love that collection!