Sea Lion
A group of sea lions is called a "raft." Even though its name refers to a big cat, a baby sea lion is called a "pup." Quite the noisy bunch, a raft of sea lions make all sorts of noises, like barks, honks, trumpets and roars.
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Northern Leopard Frog
With a name that refers to the irregularly shaped dark spots that cover its backs and legs, the northern leopard frog is found throughout North America. While their numbers have declined due to pollution, deforestation and water acidity, northern leopard frogs have another unfortunate factor to take into account: They are the amphibian of choice when it comes to cooking up frog legs.
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Koala Bear
Though suggested by its name, koalas are not actually bears, but marsupials. That means they birth underdeveloped young that must be reared in the mothers' pouches for a few months before the offspring can survive outside. Koalas are not even related to bears, but rather kangaroos and wombats.
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Elephant Shrew
More closely related to an elephant than a shrew, the elephant shrew has an elongated nose like its namesake. But with long hind legs that allow it to leap, it also resembles a rabbit! Endemic to Africa, this little animal is sometimes called a "sengi."
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Catfish
The long, whisker-like barbels poking out of the catfish's face is where its similarity to felines begins and ends. But not all catfish species have this prominent feature, which contains strong sensors that help the fish smell and detect prey (and predators). There are nearly 3,000 species of known catfish, with likely many more that are yet to be discovered.
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Guinea Pig
Though it has a compact body that resembles the anatomy of an oinkster, guinea pigs are actually furry rodents. Also known as a cavy, this popular pet was a common food source for the indigenous inhabitants of the Andes mountains in South America as far back as 5,000 B.C.E.
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