Goober, our resident Aldabra tortoise, weighs on average around 450 pounds and is approximately 70-years-old. His age is only an estimate, because when he arrived at the Zoo in 1968, he was already an adult. Giant tortoises are the longest-lived land animals, which means he might have another century in him! Currently, the oldest living land animal is a Seychelles giant tortoise named Jonathan who is 190 years old.
But why do tortoises live so long? As a rough rule of thumb, animals with a s...
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