Some animals have evolved abilities so bizarre they seem to break the laws of biology from sea cucumbers ejecting internal organs as a defense to axolotls regenerating entire limbs and organs. These ...

The book features 100 real animals who are stranger than fiction, but below you'll find some of the strangest... What happens when whales die? Their huge bodies fall to the ocean floor ...

Only vertebrate animals have real teeth, though some invertebrates have hard tooth-like plates they use to eat. One of the earliest creatures with teeth were conodonts, an eel-like creature that first ...

Only vertebrate animals have real teeth, though some invertebrates have hard tooth ... Once their permanent tusks come in, they grow at a rate of about 6.7 inches per year. One of the strangest tusks ...