You 175-year-old Harriet

The Harriet turtle is considered the Guinness world record as the longest living animal in the world.

A Galapagos turtle tool and also the oldest known turtle in the world today (Tuesday) celebrates its 175th birthday in Australia.

Many believe that Harriet's turtle used to be a pet in Charles Darwin's home.

It is believed that the turtle was captured off Ecuador in the 1830s and studied by British scientists while cherishing evolutionary theory.

Charles Darwin brought some baby turtles to London after a sea voyage on the HMS Beagle.

It is believed that the Harriet turtle is among these, although no one can say 100 percent for sure.

Animals have a reputation

One theory is that Harriet's tortoise arrived in Australia after being given to a naval officer who moved from England to Brisbane in Australia.

DNA tests confirmed this giant tortoise born in 1830, just a few years before Darwin's trip to the Galapagos Islands.

However, Harriet was a turtle strain of an island that Darwin had never set foot on.

If you were really brought back and studied by Darwin, then you were only as big as a plate.

But now he weighs 150 kilograms and is about the size of a dining table and is also one of the most famous animals at the Australian Zoo at Queensland's Sunshine Coast.

In the morning, Harriet was clean and she had a diet with green peas and leeks.

Guinness world record books say he is the oldest animal in the world.

The caregivers say that the reason why he lived so long was because he had never laid eggs and had a carefree life.