Other animals with more comparable sizes to humans, like sloths, koalas, and giant tortoises, are also left far behind. Sloths live in places where it’s too risky to move fast because predators will see them. So, they move at a sluggish 0.15 mph. And giant tortoises clock out at a max of 0.3 mph. But these animals are among the slowest on our planet.

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