An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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Mosquitoes don't just bite you, they also pee on you.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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