Original image

10 Leggy Facts About the Maned Wolf

Original image

Catch a glimpse of a maned wolf on the prowl and you might feel compelled to do a double-take: It looks like a long-nosed, shaggy-haired fox on stilts. Also, its pee mimics the scent of a certain recreational drug. Here are 10 tidbits about the coolest critter you’ve never heard of.


With a shoulder height of up to 35 inches when fully grown, this species is the tallest wild member of the canine family. (Still, it’s nowhere near the heaviest: Full-grown maned wolves max out at just 50 pounds, while the grey wolf can weigh up to 175.) The maned wolf owes its impressive stature to its disproportionately long legs, which probably evolved due to habitat preference. The animals can generally be found in open grasslands in Brazil, Peru, Paraguay, Uruguay, and Argentina, leading scientists to theorize that their legs evolved to help them see above tall grasses and shrubs while looking for prey.


Nor is it a fox, a fact betrayed by the maned wolf’s circular pupils. Real foxes have elliptical, vertically-oriented pupils that help them ambush prey in low-light conditions. Thanks to numerous anatomical quirks, the maned wolf cannot comfortably be classified as any kind of fox, wolf, dog, coyote, or jackal. A 2009 genetic analysis determined that the species’ closest relative was the tawny-furred Falkland Islands wolf, which went extinct circa 1880. (For the record, it technically wasn’t a wolf either.) The last common ancestor of these two mammals probably lived somewhere around 6.7 million years ago.

Researchers think that, among still-living animals, the maned wolf is most closely akin to the bush dog, another strange, New World beast. Rather stocky in appearance, the bush dog is notable for having webbed toes that enable it to dig more efficiently and pursue a semiaquatic lifestyle. Bush dogs are native to Panama and South America.


In the above video, you’ll hear a maned wolf releasing what is sometimes called a roar-bark. Booming and guttural, the sound is mostly used by mates to communicate with each other over long distances. When angered or distressed, maned wolves will produce a low growl as a warning. They’ve also been known to let loose high-pitched greeting whines.


Fecal samples indicate that, in the wild, fruit and vegetable matter accounts for a third to one-half of a maned wolf’s diet. The canids will often eat roots and bulbs, but they have a special taste for a tomato-like fruit known as the wolf apple (the fruit's name is derived from the maned wolf’s enthusiasm for it). Also called the loberia fruit, it’s thought to help the animals ward off parasitic kidney worms.

Loberia seeds tend to germinate more efficiently after passing through a maned wolf’s digestive tract. Furthermore, the creatures have a helpful habit of defecating directly onto leaf cutter ant nests. The insects then use this fecal matter to fertilize their in-house fungus gardens. In the process, they cast any seeds they might find into the colony’s garbage piles, where the seeds can easily take hold and grow into fruit-bearing plants. And thus, the whole mutually-beneficial cycle repeats itself.

At this point, we should note that maned wolves are still carnivores. They’re very adept at hunting down smaller mammals, with armadillos and rodents being common prey items. Reptiles, birds, insects, and eggs are also consumed when the opportunity presents itself.


Unlike real wolves, these guys don’t form packs. Although adults do live in monogamous pairs and the two mated individuals will defend a permanent territory of around 15 square miles, the male and the female rarely interact outside of the breeding season. For most of the year, they hunt, travel, and sleep alone. Between April and June, however, the wayward partners come together to reproduce. Following a 62- to 66-day gestation period, the female begets anywhere from one to five pups. In captivity, males will help rear the offspring, but it’s unknown if their wild counterparts follow suit.


These ridiculously adorable puppies have fur that is so dark it almost looks black. As they mature, their coats adopt a predominantly reddish hue, though each leg’s lower half remains dark (they also have a tuft of white on the tail). Then there’s the so-called mane, a streak of dark hair that runs down the neck, terminating just above the shoulders. (More on that in a bit.)


Maned wolves are sometimes cited as crepuscular animals, meaning that they mainly come out at dawn and dusk. This is an oversimplification. In reality, activity patterns vary wildly depending on the date and where a particular animal lives. For instance, maned wolves in Bolivia are liable to wander about at any hour during the wet season, but they’re unwaveringly nocturnal in the drier months. The situation is reversed in Brazil, where individuals tend to be diurnal in the dry season and nocturnal in the wet season.


When threatened, the thick mane hairs stand erect, making the animal appear larger. To enhance the bluff, an anxious mane wolf will stand upright, lower its head, and threateningly arch its back.


The future of these wonderful, stilt-legged canids is very much in doubt. Only around 17,000 mature adults are thought to be left in the wild. Most of these inhabit Brazil, where the local maned wolf population has declined by roughly 20 percent over the past 15 years. Widely suspected of being serial chicken-killers, the animals have long been hunted down and killed by chicken farmers throughout South America. Additionally, maned wolves are susceptible to diseases spread by domestic dogs, many of whom act aggressively towards their distant cousins. But the biggest threat to the animals is habitat loss. As grasslands and forests regularly become farmlands and villages, maned wolves are caught in the middle. Accordingly, the International Union for Conservation of Nature (IUCN) regards this species as a near-threatened one. This means that, in the not-too-distant future, the maned wolf might well become vulnerable—or worse. Hopefully, increased awareness and captive breeding programs will help turn things around.


Roar-barks are all well and good, but maned wolves primarily communicate with scent. These canines, like numerous other animals, use urine to mark their territories—but their pee is a lot different from what your pupper sprays onto the fire hydrant. Maned wolf urine releases pyrazines, hexagon-shaped clusters of nitrogen, carbon, and hydrogen that create a powerful odor that smells a lot like marijuana smoke.

A Dutch police department learned this fact by accident in 2006. That year, law enforcement officials were summoned to the Rotterdam Zoo in South Holland because guests believed there was a pot-smoker illegally lighting up at the facility. To the surprise of many, their culprit turned out to be a maned wolf who was simply marking its territory.

All images courtesy of iStock.

Original image
Fisherman Catches Rare Blue Lobster, Donates It to Science
Original image

Live lobsters caught off the New England coast are typically brown, olive-green, or gray—which is why one New Hampshire fisherman was stunned when he snagged a blue one in mid-July.

As The Independent reports, Greg Ward, from Rye, New Hampshire, discovered the unusual lobster while examining his catch near the New Hampshire-Maine border. Ward initially thought the pale crustacean was an albino lobster, which some experts estimate to be a one-in-100-million discovery. However, a closer inspection revealed that the lobster's hard shell was blue and cream.

"This one was not all the way white and not all the way blue," Ward told The Portsmouth Herald. "I've never seen anything like it."

While not as rare as an albino lobster, blue lobsters are still a famously elusive catch: It's said that the odds of their occurrence are an estimated one in two million, although nobody knows the exact numbers.

Instead of eating the blue lobster, Ward decided to donate it to the Seacoast Science Center in Rye. There, it will be studied and displayed in a lobster tank with other unusually colored critters, including a second blue lobster, a bright orange lobster, and a calico-spotted lobster.

[h/t The Telegraph]

Original image
Courtesy Murdoch University
Australian Scientists Discover First New Species of Sunfish in 125 Years
Original image
Courtesy Murdoch University

Scientists have pinpointed a whole new species of the largest bony fish in the world, the massive sunfish, as we learned from Smithsonian magazine. It's the first new species of sunfish proposed in more than 125 years.

As the researchers report in the Zoological Journal of the Linnean Society, the genetic differences between the newly named hoodwinker sunfish (Mola tecta) and its other sunfish brethren was confirmed by data on 27 different samples of the species collected over the course of three years. Since sunfish are so massive—the biggest can weigh as much as 5000 pounds—they pose a challenge to preserve and store, even for museums with large research collections. Lead author Marianne Nyegaard of Murdoch University in Australia traveled thousands of miles to find and collected genetic data on sunfish stranded on beaches. At one point, she was asked if she would be bringing her own crane to collect one.

Nyegaard also went back through scientific literature dating back to the 1500s, sorting through descriptions of sea monsters and mermen to see if any of the documentation sounded like observations of the hoodwinker. "We retraced the steps of early naturalists and taxonomists to understand how such a large fish could have evaded discovery all this time," she said in a press statement. "Overall, we felt science had been repeatedly tricked by this cheeky species, which is why we named it the 'hoodwinker.'"

Japanese researchers first detected genetic differences between previously known sunfish and a new, unknown species 10 years ago, and this confirms the existence of a whole different type from species like the Mola mola or Mola ramsayi.

Mola tecta looks a little different from other sunfish, with a more slender body. As it grows, it doesn't develop the protruding snout or bumps that other sunfish exhibit. Similarly to the others, though, it can reach a length of 8 feet or more. 

Based on the stomach contents of some of the specimens studied, the hoodwinker likely feeds on salps, a jellyfish-like creature that it probably chomps on (yes, sunfish have teeth) during deep dives. The species has been found near New Zealand, Australia, South Africa, and southern Chile.

[h/t Smithsonian]


More from mental floss studios