From the moment an animal is conceived, their body grows older until it finally reaches its expiration date. It’s the natural revolving door of life. Fortunately for some animals, their overall life span is much longer than others. While people on average live to see seventy years old, some animals can live much longer. Usually, animals have a better chance of survival in captivity without the fear of predators or hunger. But, as we’ll see, some animals have done quite well in the wild. So, which animals have lived the longest? Here are 25 oldest animals to have ever lived.