worldhistoryfacts:

Mrs. Chippy, the ship’s cat on Ernest Shackleton’s ship Endurance, with crew member Perce Blackborow. The cat, which was actually male, got its name because it followed crew member Harry “Chippy” McNish around very attentively; it became a beloved member of the group. When the expedition met with disaster (the Endurance was crushed by Antarctic pack ice in 1915), Shackleton ordered Mrs. Chippy and the dogs on board to be shot.

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Well that went south (no pun intended) quickly.