RIP Harriet, the Tortoise who Knew Darwin.

Harriet, who became famous for (probably) being studied by Charles Darwin, died at the age of 175.

Senior vet Dr John Hangar told Australia's ABC that Harriet, a Giant Galapagos tortoise, had died of heart failure after a short illness.

"She had a very fairly acute heart attack and thankfully passed away quietly overnight," Dr Hangar said.

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