The 11 Weirdest Animal Stories of 2017

From cannibalistic chimps to a new species of purple frog, here are our picks for Mother Nature's best gifts of 2017.

Bhupathy's purple frog spends nearly its entire adult life underground in India's Western Ghats.

Nature never ceases to amaze—and so it was in 2017. This year brought us shark-eating alligators, birds feeding goldfish, and a badger that buried a cow—all by itself.

So those of you who love the weird and wild around us, we've picked our favorite animal stories of 2017. (See the weirdest animal stories of 2016.)

11) Exclusive: Rare Black Wildcat Caught on Film in Africa

An extremely rare melanistic serval—a species of small cat—in Tsavo, Kenya.

For Sergio Pitamitz, seeing a black cat was a stroke of luck. In February in Kenya's Tsavo West National Park, the photographer spotted a jet-black serval—a wildcat with a normally cheetah-like coat. (Related: "Out of the Shadows, the Wildcats You've Never Seen.")

The animal is melanistic—its genes carry a mutation that creates more dark pigment than light pigment, according to Eduardo Eizirik, a biologist and cat-melanism expert at Pontifical Catholic University of Rio Grande do Sul in Brazil.

10) New Gecko Sheds Skin on Demand, Looks Like Raw Chicken

A scaleless Geckolepis megalepis lives in Madagascar.

Tear-away pants may provide comic relief on the big screen, but for some geckos, shedding skin fast can mean life or death. Meet Geckolepis megalepis, a new species of fish-scaled gecko from Madagascar that can drop its scales on demand—all the way down to the muscle.

The tropical creature joins four other lizard species that lose their skin when threatened, similar to the well-known reptilian strategy of shedding tails to escape predators, according to a February study. (Read about an overachieving lizard that grew three tails.)

9) First: Badger Buries Entire Cow in Shocking New Video

Watch a Badger Bury an Entire Cow (Never Before Seen)

Over the course of five days in Utah's Great Basin, a single American badger excavated tunnels beneath the calf carcass until the whole thing collapsed into a pit. The badger then covered the carcass completely and constructed a burrow beside it, inside which it feasted on beef for 11 straight days, we reported in March.

Later investigation into the scientific literature revealed no one had ever recorded a badger entomb anything larger than a jackrabbit.

8) First-Ever Photos Show Wild Lion Nursing Leopard Cub

A leopard suckles a leopard cub in an unusual sight.

African lions and leopardsare not what you'd call friends. In fact, lions have a habit of killing leopards.

So it was quite surprising when a five-year-old lioness was seen nursing a weeks-old leopard cub in July in Tanzania's Ngorongoro Conservation Area.

“It’s unprecedented,” says Luke Hunter, president and chief conservation officer for Panthera, a global wild cat nonprofit. “We never see this in the wild.”

7) Bird Filmed Feeding Goldfish—Here’s Why

Why Is This Bird Feeding Goldfish?

Originally posted on YouTube in 2010, this footage shows a cardinal hopping alongside a goldfish pond, then dropping what appears to be seeds into their waiting mouths.

"My best guess is that the appearance of the goldfish’s open mouth at the surface of the water is just similar enough in size and shape to the open mouth of a baby bird that it triggers the instinct in the adult bird to provide food to it," Princeton biologist Christina Riehl said in August.

6) Orcas Team Up to Kill Whale in Raw, First-Ever Video

Watch: Orcas Hunt a Whale in Rare Video

For the first time, scientists witnessed how orcas work as a team to surround and kill a juvenile bowhead, which can be three times heavier than an adult orca, according to an August story.

"Once they start to learn something, orcas will keep perfecting the skill, and this family has honed their hunting to require minimal energy," says Olga Shpak, a biologist at the Severtsov Institute of Ecology in Russia who saw the hunt firsthand in the Okhotsk Sea. (See an interactive graphic of orca hunting.)

5) New Purple Pig-Nose Frog Found in Remote Mountains

In August, we reported that scientists had found a new and unusual species of frog in India's Western Ghats mountain range. The frog has shiny, purple skin, a light blue ring around its eyes, and a pointy pig-nose.

Bhupathy’s purple frog is closely related to another purple frog (N. sahyadrensis) found in the region in 2003. Together, the two make up the only known members of their family. The find comes as part of an effort sponsored by the Indian government to sample the DNA of every frog and toad species in the nation.

4) Alligators Attack and Eat Sharks, Study Confirms

An adult American alligator captures a nurse shark in the J.N. "Ding" Darling National Wildlife Refuge in Florida.

American alligators gobble up anything they can get their jaws around. A September study added new items to their menu: sharks and stingrays.

It's particularly surprising, says study leader James Nifong, an ecologist at Kansas State University, because alligators are known as freshwater predators.

3) Exclusive Picture: Female Anaconda Strangles Male After Sex

A female anaconda kills a male after mating in Brazil.

While tracking down a particularly large snake in the swamps of Brazil, photographer Luciano Candisani got more than he'd hoped for: the first known image of a female green anaconda squeezing her mate to death.

The reason is simple: The male is good protein for an expecting mother, especially one who fasts the whole seven months of pregnancy, we reported in February.

2) In Rare Killing, Chimpanzees Cannibalize Former Leader

Aftermath of a Chimpanzee Murder Caught in Rare Video

It was a grisly sight: a murdered chimpanzee, his body beaten, bloodied—and partially cannibalized—by members of his former social group.

Researchers who found the gruesome scene in Senegal in 2013 knew that chimpanzees are no strangers to lethal violence. At every chimpanzee site that’s been studied for more than a decade, scientists have observed conflicts that end in death.

The incident—described in January in the International Journal of Primatology and whose aftermath was caught on video—is just the ninth recorded case of a chimpanzee community killing one of its own.

1) Giant Rat That Fell From Sky Is New Species

The newfound rat is much bigger than your average city rodent.

In November 2015, when loggers felled a 30-foot-tall tree on the island of Vangunu and a rodent of unusual size came crashing down with it.

“I immediately knew it was something new,” mammalogist Tyrone Lavery, a fellow at the Queensland Museum and Chicago's Field Museum who's been searching for the rat since 2010, said in September.

Weighing more than two pounds and growing up to 1.5 feet long, the Vangunu giant rat (Uromys vika) is about four times larger than city rats scurrying through alleys and dumpsters the world over. 

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