Mrs Chippy was a cat taken aboard the Shackleton's Endurance expedition by its carpenter Harry McNeish. He was a tabby described as "full of character" by members of the expedition (Chippy's mate was not a lady but a gentleman).
When the Endurance was crushed in the sea ice and then sank, it was clear that Mrs Chippy would not survive. Shackleton ordered him shot along with the pups and later the rest of the dogs.
Mrs Chippy's death affected McNeish greatly and most of those who had been aboard the Endurance where he had become a well-loved and most popular shipmate.
The loss of his cat was something for which McNeish never forgave Shackleton and mourned the rest of his life.
Acknowledgements to the NZ Antarctic Society for the above extract. Chris Elliot is the sculptor.