Finally! Scientists Have Figured Out How Wombats Poop Cubes

iStock.com/burroblando
iStock.com/burroblando

The fact that wombats use their poop to mark their territory isn’t unusual in the animal kingdom. What does separate them from their furry peers is the distinctive shape of their droppings. Wombats are the only animals to poop cubes, according to Science News, and researchers think they have finally figured out how they do it.

Mechanical engineers David Hu and Patricia Yang at the Georgia Institute of Technology received a lovely gift of two frozen wombats—roadkill, mind you—from an Australian colleague. After dissecting the specimens, they analyzed the animals’ intestines and discovered that they’re incredibly stretchy. Wombats' intestines expand to two or three times their original width when feces passes through, the researchers reported at an annual meeting of the American Physical Society's Division of Fluid Dynamics in Atlanta.

Wombat dung
Bjørn Christian Tørrissen, Wikimedia Commons // CC BY-SA 3.0

To test the elasticity of different sections of intestine, the researchers took skinny balloons (the kind used to make animal shapes) and inflated them inside the organ. Not all of the sections were stretchy, though, and Yang suggested that the stiffer areas might help form the edges of the poo cubes as waste gets pushed through the last few feet of intestine. (Wombat digestive tracts measure about 30 to 40 feet, according to another study of digestion in wombats.)

The final eight percent of the intestine is also where the feces changes from “a liquid-like state into a solid state composed of separated cubes,” each measuring about three-quarters-of-an-inch in length, according to researchers.

The advantage of wombats' oddly-shaped dung, according to Science News, is that they’re better for stacking and they don’t roll off rocks as easily. Wombats tend to produce 80 to 100 turds per night, and they prefer to deposit them atop rocks, logs, and piles of dirt, where they can easily be seen. The smell also helps them navigate better at night.

Although impressive in their own right, wombats aren’t the only animals whose fecal matter seem to defy physics. Take sloths, for instance: A single bowel movement can weigh up to a third of a sloth’s body weight.

[h/t Science News]

Wayfair’s Fourth of July Clearance Sale Takes Up to 60 Percent Off Grills and Outdoor Furniture

Wayfair/Weber
Wayfair/Weber

This Fourth of July, Wayfair is making sure you can turn your backyard into an oasis while keeping your bank account intact with a clearance sale that features savings of up to 60 percent on essentials like chairs, hammocks, games, and grills. Take a look at some of the highlights below.

Outdoor Furniture

Brisbane bench from Wayfair
Brisbane/Wayfair

- Jericho 9-Foot Market Umbrella $92 (Save 15 percent)
- Woodstock Patio Chairs (Set of Two) $310 (Save 54 percent)
- Brisbane Wooden Storage Bench $243 (Save 62 percent)
- Kordell Nine-Piece Rattan Sectional Seating Group with Cushions $1800 (Save 27 percent)
- Nelsonville 12-Piece Multiple Chairs Seating Group $1860 (Save 56 percent)
- Collingswood Three-Piece Seating Group with Cushions $410 (Save 33 percent)

Grills and Accessories

Dyna-Glo electric smoker.
Dyna-Glo/Wayfair

- Spirit® II E-310 Gas Grill $479 (Save 17 percent)
- Portable Three-Burner Propane Gas Grill $104 (Save 20 percent)
- Digital Bluetooth Electric Smoker $224 (Save 25 percent)
- Cuisinart Grilling Tool Set $38 (Save 5 percent)

Outdoor games

American flag cornhole game.
GoSports

- American Flag Cornhole Board $57 (Save 19 percent)
- Giant Four in a Row Game $30 (Save 6 percent)
- Giant Jenga Game $119 (Save 30 percent)

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The Reason Your Dog Follows You Everywhere

Crew, Unsplash
Crew, Unsplash

Depending on your mood, a dog that follows you everywhere can be annoying or adorable. The behavior is also confusing if you're not an expert on pet behavior. So what is it about the canine companions in our lives that makes them stick by our sides at all times?

Most experts agree on a few different reasons why some dogs are clingy around their owners. One is their pack mentality. Dogs may have been domesticated thousands of years ago, but they still consider themselves to be part of a group like their wild ancestors. When there are no other dogs around, their human family becomes their pack. According to Reader's Digest, this genetic instinct is also what motivates dogs to watch you closely and seek out your physical touch.

The second reason for the behavior has to do with the bond between you and your pet. As veterinarian Dr. Rachel Barrack told the American Kennel Club, puppies as old as 6 months can imprint on their human owners like they would their own mothers. Even older dogs will bond with the humans in their lives who show them care and affection. In these cases, a dog will shadow its owner because it sees them as an object of trust and security.

The last possible explanation for why your dog follows you has more to do with your treatment of them than their natural instincts. A popular training tactic is positive reinforcement—i.e. rewarding a dog with treats, pets, and praise when they perform positive behaviors. The point is to help your dog associate good behaviors with rewards, but after a while, they may start to associate your presence with rewards as well. That means if your dog is following you, they may be looking for treats or attention.

A clingy dog may be annoying, but it usually isn't a sign of a larger problem. If anything, it means your dog sees you in a positive light. So enjoy the extra companionship, and don't be afraid to close the door behind when you need some alone time.