Jonathan, the 194-year-old tortoise: the diet that may explain his remarkable longevity

Jonathan, the 194-year-old tortoise, has attracted fresh attention after marking another birthday, as vets shared details of the diet that could help explain his remarkable longevity.

Is Jonathan the world’s oldest land animal?

Living on Saint Helena, a British territory in the South Atlantic, Jonathan is recognised as the oldest land animal on the planet. He is thought to have been born around 1832.

Across almost two centuries, the reptile has lived through successive periods of history, including Queen Victoria’s reign, and has become a symbol of animal longevity.

How did Jonathan meet Queen Victoria?

The future British queen was still a young princess when Jonathan was born. Over his long life, he has lived through whole generations and witnessed changes that few living creatures could have seen.

He never met the monarch in person, however. The curious claim that he “met” Queen Victoria refers to the fact that they shared the same historical era: Jonathan lived throughout her reign.

Jonathan remains active despite his limitations

As he has grown older, Jonathan has lost almost all his sight and his sense of smell has also diminished. Nevertheless, he still moves around every day and remains in generally good health.

His keepers monitor his daily routine closely and offer him stronger-smelling foods to make eating easier and ensure he continues to receive all the nutrients he needs.

What diet helps the tortoise live so long?

The vets caring for Jonathan say that a balanced diet is among the most important factors in maintaining his health, even at nearly two centuries old.

His feeding routine features a variety of ingredients prepared to provide sufficient vitamins, fibre and hydration. The main foods include:

• Lettuce and other leafy greens
• Carrot
• Apple
• Cucumber
• Banana
• Seasonal fruit
• Vitamin supplements when needed

Why is the tortoise still so popular?

The story of the 194-year-old tortoise makes an impression because so few animals reach such an advanced age. His case attracts interest from researchers and nature lovers around the world.

Beyond his longevity record, Jonathan demonstrates how a balanced diet, ongoing veterinary care and a suitable environment can contribute to an exceptionally long life, making him a reference for studies of ageing.