Meet the cassowary. These are flightless birds native to the tropical forests of New Guinea and northeastern Australia. There are three extant species. The most common of these, the southern cassowary, is the third tallest and second heaviest living bird, smaller only than the ostrich and emu.

All three species have horn-like but soft and spongy crests called casques on their heads, up to 18 cm (7 inches), which serves several purposes. The most interesting being that the wedge-shaped casque may have evolved to protect the head of this animal by deflecting falling fruit, since cassowaries spend a lot of time under trees where seeds the size of golfballs or larger fall from heights of up to 30 metres! ...

While this may look like sushi, it's actually Argentina's pink fairy armadillo. This rarely seen animal has silky white hair and a pinkish carapace; it ranges in size from 3.3 to 4.6 inches (84 to 117 millimeters) long, making it one of the smallest species of armadillos. The animal is also nocturnal and has the ability to bury itself in lightning speed given its long claws, which are an astonishing one-sixth the length of the body. ...

A crystal known as the watermelon tourmaline! Tourmalines are the most colorful of all gemstones. They occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gem colors. Scientifically, tourmaline is not a single mineral, but a group of minerals related in their physical and chemical properties. The mineral Elbaite is the member of the Tourmaline group that is responsible for almost all the gem varieties. Three other members of the group - Schorl, Dravite and Liddicoatite, are seldom used as gemstones. ...

Anywhere between 1 in 30 million and 1 in 50 million, according to some estimates. In August of 2014, one lucky fisherman captured an extremely rare "calico" lobster in New Hampshire.

You guessed it! The tufted ground squirrel (Rheithrosciurus macrotis), also known as the vampire squirrel.

Check out what may be the first video of the remarkable and rare animal. This species of squirrel is twice the size of most tree squirrels, reputedly has a taste for blood, and has the bushiest tail of any mammal compared with its body size with its tail being 30 percent larger than its body.

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A living, swimming ghost fish has been seen live for the first time ever.

The fish, part of the family Aphyonidae, was caught on camera during an ongoing National Oceanic and Atmospheric Administration (NOAA) exploration by the ship Okeanos Explorer. The exploration centers on the deep ocean at Mariana Trench Marine National Monument, a protected area spanning 95,216 square miles (246,608 square kilometers) east of the Philippines.

The secretive fish was swimming along a ridge 8,202 feet (2,500 meters) down, according to NOAA. The animal is about 4 inches (10 centimeters) long, with translucent, scale-less skin and eerie, colorless eyes. No fish in the family Aphyonidae has ever been seen alive before.

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The Bali myna (Leucopsar rothschildi) is one of the rarest birds in the world. Thanks to poaching, their wild population hit an all-time low of just six individuals in 2001, but their numbers have since increased to around 50 wild mature birds. And just this month, the Bali Starling Conservation Project, which is home to 100 Bali mynas, has celebrated the birth of four healthy chicks to add to their breeding program. ...