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Some animals do live longer than humans.

When we are young, our cells divide rapidly to replace the old dying cells. They even fight against diseases and help us remain healthy. However, as we begin to age, the cells cannot efficiently divide and fight against diseases. Thus, eventually our lifespan begins to come to an end.

Now, it is believed that animals live longer because of the environments they live in. For example, animals that live in cold oceans have slow metabolic rates. According to a study, slow metabolic rate slows down the aging process, thus making those animals live longer. For example, Greenland sharks which are found in cold Arctic oceans can live up to 400 years.

In addition to this, it is observed that the size of an animal also plays a role in determining its lifespan. Smaller the animal, more are the number of predators. Hence, the risk of dying early is high. Thus, animals like mice have a lifespan of about 1 to 2 years as compared to elephants whose lifespan is about 60 years.

However, animals like bats and some other birds are an exception to this size rule. Even though they are small, they don't die early and live a longer life because they have evolved strong defense mechanisms.

Moreover, it is also observed that some species which breathe fewer times per minute seem to live longer. For example, a tortoise which takes about 4 to 5 breaths per minute lives for more than 100 years, while a dog which takes about 24 breaths per minute lives for approximately 10 to 20 years.

Also, according to a study, very small species of animals like flies and worms lack the cells which divide and replace the old ones. Hence, they don't live a long life.

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