The secret to a long life is eating healthy and for an 183-year-old tortoise that is doctor’s orders. Jonathan the world’s oldest known animal had lost his sense of smell and is almost blind due to cataracts. His food consisted of only leaves and sticks, causing him to lose weight and making his beak weak. The large creature lives in the island of St. Helena, a British territory located off the western coast of Africa. The local veterinarian, doctor Joe Hollins, changed Jonathan’s diet to a more nutritious one consisting of guava, bananas, cucumbers, carrots, and apples. The Seychelles tortoise has gained weight and is more active. Hollins believes Jonathan is capable of living to 250 years.