The Heartwarming Stories Of 11 Of History’s Most Loyal Canine Companions

Published November 28, 2023
Updated December 11, 2024

Seaman, The Famous Dog Who Explored The American West With Lewis And Clark

Seaman The Famous Dog

Public DomainA painting of a Newfoundland (not Seaman, of whom no images exist) from around 1824.

The story of Meriwether Lewis and William Clark’s expedition is well-known. What’s less known is that the human party also included a canine companion, Lewis’ Newfoundland Seaman (also sometimes called Scannon).

Though Seaman only makes periodic appearances in the expedition members’ journals, he appears to have been a steadfast companion during the 8,000-mile journey. Though many initially referred to him as “Captain Lewis’ dog” or “the dog,” they started calling him “our dog” as time wore on.

Seaman made his first appearance in Lewis’ journals in September 1803, about two weeks after the explorer had set out from Pittsburgh. While near the Ohio River, Lewis saw swimming squirrels. He wrote: “I made my dog take as many each day as I had occation for, they wer fat and I thought them when fryed a pleasent food… my dog was of the newfoundland breed very active strong and docile, he would take the squirel in the water kill them and swiming bring them in his mouth to the boat.”

Along the way, Seaman also seemed to impress the Indigenous people Lewis and Clark encountered.

“They had indeed abundant sources of surprise in all they saw,” Lewis wrote of meeting some Lemhi Shoshone Native Americans. “The appearance of the men, their arms, their clothing, the canoes, the strange looks of the negro [an enslaved man named York was part of the expedition], and the sagacity of our dog, all in turn shared their admiration.”

Lewis And Clark Expedition

Public DomainMembers of the Lewis and Clark expedition. Seaman is not depicted among them.

In fact, one Indigenous man was so impressed with Seaman that he tried to trade with Lewis for him on a different occasion.

“[O]ne of the Shawnees a respectable looking Indian offered me three beverskins for my dog with which he appeared much pleased,” Lewis wrote. “[O]f course there was no bargan, I had given 20$ for this dogg myself.”

Though Seaman’s fate is unknown, historical evidence seems to suggest that he survived the journey back east and that he spent his final days with Lewis, who died of either suicide or murder in 1809.

author
Kaleena Fraga
author
A senior staff writer for All That's Interesting since 2021 and co-host of the History Uncovered Podcast, Kaleena Fraga graduated with a dual degree in American History and French Language and Literature from Oberlin College. She previously ran the presidential history blog History First, and has had work published in The Washington Post, Gastro Obscura, and elsewhere. She has published more than 1,200 pieces on topics including history and archaeology. She is based in Brooklyn, New York.
editor
Jaclyn Anglis
editor
Based in Brooklyn, New York, Jaclyn Anglis is the senior managing editor at All That's Interesting, where she has worked since 2019. She holds a Master's degree in journalism from the City University of New York and a dual Bachelor's degree in English writing and history from DePauw University. In a career that spans 11 years, she has also worked with the New York Daily News, Bustle, and Bauer Xcel Media. Her interests include American history, true crime, modern history, and science.
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Fraga, Kaleena. "The Heartwarming Stories Of 11 Of History’s Most Loyal Canine Companions." AllThatsInteresting.com, November 28, 2023, https://allthatsinteresting.com/famous-dogs. Accessed August 2, 2025.