How did dogs arrive in the Americas?

How did dogs arrive in the Americas?

Where the heck did dogs come from? Okay, okay. We know that dogs’ roots are with wild wolves, but how did these fur babies make their way to the Americas? We’re talking that far back. So again, where the heck did the dogs come from?

To be frank, this is a question that never crossed our minds until researchers at the University at Buffalo landed on a profound piece of evidence that holds the clues of where our fur baby companions came from.

A bone fragment was discovered in Southeast Alaska which is reported to have belonged to a dog in that region approximately 10,150 years ago. It’s reported as the femur of a dog and is the only known, oldest confirmed specimen of a domesticated dog.

But researchers weren’t out for this information. Originally, according to evolutionary biologist and University at Buffalo’s Charlotte Lindqvist, their focus was on how “Ice Age climatic changes impacted animals' survival and movements in this region”. 

The femur came into play as they were sequencing DNA from hundreds of animal bones for their research. At first, the dog femur in question was thought to be that of a bear, but upon further inspection, the discovery of canine origins piqued their curiosity.

From Science Daily in Lindqvist’s words:

"We now have genetic evidence from an ancient dog found along the Alaskan coast. Because dogs are a proxy for human occupation, our data help provide not only a timing but also a location for the entry of dogs and people into the Americas. Our study supports the theory that this migration occurred just as coastal glaciers retreated during the last Ice Age," says Lindqvist, PhD, associate professor of biological sciences in the UB College of Arts and Sciences. "There have been multiple waves of dogs migrating into the Americas, but one question has been, when did the first dogs arrive? And did they follow an interior ice-free corridor between the massive ice sheets that covered the North American continent, or was their first migration along the coast?"
"The fossil record of ancient dogs in the Americas is incomplete, so any new remains that are found provide important clues," says Flavio Augusto da Silva Coelho, a UB PhD student in biological sciences, and one of the paper's first authors. "Before our study, the earliest ancient American dog bones that had their DNA sequenced were found in the U.S. Midwest."

With the Southeast Alaskan dog femur, the researchers were able to support their claim that “the first human and dog migration occurred through the Northwest Pacific coastal route instead of the central continental corridor, which is thought to have become viable only about 13,000 years ago”, according to University at Buffalo PhD student Flavio Augusto da Silva Coelho.

That isn’t to say that the Northwest Pacific coastal route is the only possible route or point of entry into the Americas. Researchers report that canines arrived in the Americas at different times which opens up the possibilities of additional entry points for these four-legged companions. 

We look forward to hearing more from these researchers as they continue their studies!

This is just a sampling of tips and informational posts we offer at Joyride Harness. You can find more content including tips and tricks and how-tos for caring for your dog on our blog in this section.

Share this post

Leave a comment

Please note, comments need to be approved before they are published.


Headquartered in sunny Los Angeles , CA, we are committed to providing products that will make you and your dog happier and better with each other and out in the world.

learn more