Florida Is Home to 'Skull-Collecting' Ants, Because Florida

Florida’s Formica archboldi ants are not to be messed with. As Newsweek reports, a North Carolina-based researcher recently discovered that the species applies a waxy coat to its body to chemically mimic its intended prey, a kind of trap-jaw ant in the genus Odontomachus. Then, the predator sprays its unsuspecting prey with acid to immobilize it and drags it back to its underground lair, where it dismembers the body and presumably eats everything but the hollowed-out heads.

The Florida ant’s habit of letting the heads pile up in its nest has earned it a pretty grisly nickname: the “skull-collecting ant.” This behavior has been observed since the 1950s. However, scientists have only recently learned how the Florida ant manages to kill trap-jaw ants, which are formidable predators in their own right (they can snap their jaws shut at speeds of over 100 miles an hour).

Researcher Adrian Smith, head of the Evolutionary Biology & Behavior Research Lab at the North Carolina Museum of Natural Sciences, observed the F. archboldi ants mimicking trap-jaw ants at the chemical level by coating their bodies in the same waxy substance that covers their prey. Smith says they’re probably disguising themselves, but the extent to which they do so isn’t yet known.

The ants were also seen shooting formic acid from their abdomens to render the trap-jaw ants motionless. The new findings were published in the journal Insectes Sociaux, and Smith even captured the gruesome action on camera, which you can check out in the video below.

Smith says he’s been fascinated with the ants—which are also found in parts of Alabama and Georgia—since he was an undergrad student at Florida State.

“They’re one of the most badass ants I know of. That’s why I wanted to study them—they decorate their nests with skulls,” Smith told The Verge. “A lot of other ants do cool things, but these are special to me because they’re from Florida, and I’m from Florida."

[h/t Newsweek]

Middle School Student Discovers Megalodon Tooth Fossil on Spring Break

iStock.com/Mark Kostich
iStock.com/Mark Kostich

A few million years ago, the megalodon was the most formidable shark in the sea, with jaws spanning up to 11 feet wide and a stronger bite than a T. Rex. Today the only things left of the supersized sharks are fossils, and a middle school student recently discovered one on a trip to the beach, WECT reports.

Avery Fauth was spending spring break with her family at North Topsail Beach in North Carolina when she noticed something buried in the sand. She dug it up and uncovered a shark tooth the length of her palm. She immediately knew she had found something special, and screamed to get her family's attention.

Her father recognized the megalodon tooth: He had been searching for one for 25 years and had even taught his three daughters to scour the sand for shark teeth whenever they went to the beach. Avery and her sisters found a few more shark teeth that day from great whites, but her megalodon fossil was by far the most impressive treasure from the outing.

Megalodons dominated seas for 20 million years before suddenly dying out 3 million years ago. They grew between 43 and 82 feet long and had teeth that were up to 7.5 inches long—over twice the size of a great white's teeth. They're thought to be the largest sharks that ever lived.

Megalodon teeth have been discovered on every continent except Antarctica, but they're still a rare find. Avery Fauth plans to keep her fossil in a special box at home.

[h/t WECT]

Watch the Denver Zoo’s New Baby Sloth Cuddle Up With Its Mom

Denver Zoo
Denver Zoo

If you’re a sucker for itty, bitty, furry animals, then you’ll want to drop whatever it is you’re doing and check out this video of the Denver Zoo’s newest resident. Uploaded by The Denver Post, the video shows a week-old sloth clinging to its mother, and it’s almost too cute to handle.

The healthy baby, whose name and sex have not yet been determined, was born on April 11 to its proud sloth parents: 23-year-old Charlotte Greenie and 28-year-old Elliot. It also has an older sister, named Baby Ruth, who was born in January of last year. Dad and Baby Ruth are “temporarily off-exhibit” to give mom and her newborn baby the chance to rest and bond in their habitat—an indoor aviary that's part of the zoo's Bird World exhibit.

The baby belongs to one of six species of sloth called the Linne's two-toed sloth, which is native to the rainforests of South America and are not currently considered threatened. Unlike their distant relatives the three-toed sloths, two-toed sloths are mostly nocturnal creatures. They also tend to move faster than their three-clawed counterparts, although fast is putting it generously.

Like many things sloths do, the baby was slow to arrive. Zoo officials predicted that Charlotte would give birth as early as January, but the expected due date may have been a miscalculation.

“Sloth due dates are notoriously challenging to predict because sloths are primarily active at night and we rarely observe their breeding,” the zoo said in a statement. “Our animal care team closely monitored Charlotte for months to ensure that she and the baby were healthy and gaining the appropriate amount of weight.”

The baby is expected to cling to its mother for at least six months. Zoo officials say the best time to visit mom and baby is in the late afternoon, when Charlotte is more likely to be active.

[h/t The Denver Post]

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