Remains of oldest American dog bolster idea that first humans arrived along the coast

When researchers began to excavate a tunnellike cave on the west coast of Alaska in 1998, they were hoping to discover the remains of ancient bears. Instead, they unearthed something even more intriguing: a tiny chip of bone belonging to the first known dog in the Americas. The find supports the idea that dogs accompanied the first humans who set foot on these continents—and that both traveled there along the Pacific coast.

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