Narwhals are often called the “unicorns of the sea” thanks to the long, spiral tusk that juts from their heads. This tusk, which is actually an elongated tooth, can grow up to 10 feet long and ...

This weird-looking animal is not one to mess with either — they use their bills to decapitate their prey, and their food sources consist of large fish, water snakes, eels, and even small crocodiles.

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These strange beasts give mythical creatures a ... and then suck it back to swallow—mirroring the action of tongued animals. Looking at various bits of mudskipper anatomy sheds light on ...

While seahorses might be one of the most famous animals to call New York home, another strange critter also lives in the ...

Most of all, when you look at them you can’t help but feel ... lizard is one of the rarest reptile species known. These strange animals are ... [+] semi-aquatic and only found on the island ...

It pushes off from all four feet and hops straight up in the air, looking like a kernel of popcorn in a microwave. Guinea pigs aren't the only animals that popcorn, as this behavior is called.

A rhesus macaque monkey hangs out near a fence at the primate research center at UC Davis on Tuesday in Davis, Calif. A UC Davis psychiatry professor recently developed a technique that the ...