Lewis and Clark Expedition Facts: Who was Seaman?

A Newfoundland retriever that Capt. Meriwether Lewis purchased probably in Pittsburgh while waiting for the keelboat to be built.
Had thick, black, curly hair that kept him warm, and webbed feet for swimming.
Weighed from 110 to 150 pounds.
For years people thought his name was Scannon, because of misreading handwriting in the Lewis and Clark journals.
Since he's a water-going dog, and his breed is named for a Canadian province that is an island in the North Atlantic, Seaman (another word for sailor) makes a great name for him.
He's never mentioned again in the journals after July 1806.
He helped out as a guard, one time barking a warning when a huge bison bull stumbled toward camp at night. Alerted, the men could get out of the buffalo's way.
Lewis, Seaman's master, wrote that he liked the taste of dog meat when it was served to the Corps. Clark, who hadn't brought along a pet, wouldn't eat dog meat.