Are Cats Smarter Than Dogs?

iStock
iStock

Dogs are friendly, cats are smart. This simple, albeit simplistic, dichotomy has been cited—and argued over—by many a pet owner. But still, the question remains: Is it true that felines are more intelligent than their canine counterparts?

We hate to burst the bubbles of all the ailurophiles reading this, but experts say that comparing cat intelligence to dog smarts is like comparing apples and oranges: “Intelligence evolves to solve problems that are recurrent over an evolutionary relevant timescale,” Rosalind Arden, a researcher at the London School of Economics who studies intelligence in people and dogs, tells Mental Floss. “This timescale is not fixed. Cats, who must eat meat, and dogs, who like meat but are more omnivorous, have faced different ecological, survival, and mating problems for a long time. We should therefore expect their cognitive abilities to differ.”

That said, cat cognition is fairly understudied. To test intelligence among animals, scientists need to come up with a study that presents a solvable problem to its non-human subjects; yields a “right” or “wrong” answer; and has a measurable outcome, using criteria like how long, or how many trials, each animal took to solve said problem. And as you can probably imagine, cats are not the easiest subjects to test. (One scholar even said it was easier to work with fish.)

“Since dogs like snacks, we make food-oriented 'tests,''' Arden says. “With cats? Jeepers. Most of them say, 'I'll have mine with the organic double cream on the side, please.’ They are harder to work with. Kudos to those who manage it.”

So far experts know that cats have "object permanence," or the ability to know an object is there even when it goes out of sight—a prime example being a toy they've batted underneath a couch. They also seem to be able to figure out where the item has been moved, even if they aren't privy to the action itself.

Studies also show that felines can discriminate between quantities, follow a human-pointing gesture to find food, respond to their owners' emotions, distinguish between humans using only vocal cues, and figure out simple food puzzles—all similar to dogs. (Unlike dogs, however, cats won't look up at their owners for "help" if they can't solve a puzzle.)

Meanwhile, researchers in Japan recently found that cats may be able to respond to facial expressions, gestures, and human gestures, and discern which food bowl they had already eaten out of, compared to an untouched one, after a 15-minute interval.

However, we still have a long way to go before we figure out what felines are truly capable of—and when we do, we should compare them to other cats instead of dogs.

“I'd bet the house that some cats are smarter than others,” Arden says. "The slog for scholars is to expose those differences with rigorous science, and to show that those differences are reliable, meaning they don't change with the weather, and that they are valid, meaning that the animals with higher test scores are also better at doing things in the real world. That takes a lot of work. We are only at the beginning of figuring out how to test intelligence in other species.”

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

Who Has Jurisdiction for Crimes Committed in Space?

iStock/nedelcupaul
iStock/nedelcupaul

It's 2050. Humans have mastered commercial space travel. Hundreds of people pay thousands of dollars to be sent into orbit in a spaceship. Maybe some decide to help colonize Mars.

Then, trouble. A jilted spouse. A smuggled firearm. Perhaps a struggle followed by suffocation. A space traveler is found dead on board a ship or on the Red Planet. Who has jurisdiction over such crimes? Is there such a thing as a cosmic Hercule Poirot? Could someone fall through the cracks and get away with space murder?

To date, no one has been victim of a space crime. But because no one nation can lay claim to ownership of space, the idea of a criminal offense committed outside of our atmosphere is something people have already given some thought to.

According to NASA engineer and instructor Robert Frost, the language of law for galactic felonies would be the Outer Space Treaty of 1967. In Article VIII of the treaty, nations engaging in space exploration agree that they will bear responsibility for the actions of personnel aboard their craft. In other words, if a privatized shuttle from China sees a fight break out among crew members, leaving one injured, China would be the entity responsible for handling legal repercussions.

That varies slightly with the International Space Station, or ISS, which is home to a number of personnel from different nations. In the case of the ISS, an intergovernmental agreement signed in 1998 mandates that the home country of the offender will handle any investigation or prosecution. If the victim is a national of another country, that country will have the right to inquire as to the criminal status of the offender and seek to have jurisdiction over the matter if they feel justice isn't being meted out.

In most cases, space crime sprees would be treated the same as if an offender was traveling in a foreign country or in international waters. If you're a U.S. citizen and decide to bludgeon someone at sea or on the Moon, the various international agreements and national laws would determine how you get prosecuted. (Assuming, of course, you returned to Earth to answer the charges.)

Space crimes pose another intriguing wrinkle. In terra firma investigations, authorities can secure crime scenes, question witnesses, and preserve evidence. Aboard a spaceship or on a distant planet, these procedures would be difficult to perform, and almost impossible to do in a timely fashion. Even if a criminal investigator is on Mars, low gravity will affect blood spatter and bodies may even decay at a different rate than they do on Earth. While an American may be found liable for murder, proving it was malicious and not the result of the dangerous environment would give any prosecutor a headache. A defense attorney, on the other hand, would have a field day questioning defective spacesuits or toxic exposure to strange space chemicals.

Then again, prosecutors may not have to concern themselves with evidence. Thanks to airlocks and restrictive suits, the movement of space travelers is highly monitored. It would be hard to make any plausible deniability about one's whereabouts.

The closest thing to space crime that law enforcement has yet encountered may be crimes committed in Antarctica, the frigid and isolated continent that's unaffiliated with any country but operates under the Antarctic Treaty signed by 54 nations. The agreement declares that the suspect is likely under their home country's jurisdiction. In some cases, the country owning the research station where the alleged crime took place steps in. In 2018, a Russian researcher at Bellingshausen Station on King George Island went after his victim with a knife in the station's dining room. He was charged in Russia, though reports indicate the case has since been dropped. And in 2000, an Australian astrophysicist suspected of being fatally poisoned had an autopsy performed in New Zealand. The exam showed he had ingested methanol, but it remains unknown whether he did so accidentally or whether someone gave it to him. New Zealand police were unable to determine the source.

A person committing murder in space would certainly be held responsible. But whether they'd ever be found guilty beyond a reasonable doubt remains very much up in—and beyond—the air.

Why Do Dogs Eat Grass?

iStock/K_Thalhofer
iStock/K_Thalhofer

If something is edible (or even if it's not), many dogs will gladly make a meal of it. But if you see your pet grazing on your front lawn like cattle, it may be driven by something more than its undiscerning appetite. Eating grass frantically can be a sign that a dog is sick.

It's not unusual to see a dog vomit after consuming grass, prompting some pet owners to wonder if their dog ate the grass to soothe its own upset stomach or if the grass is what caused its symptoms in the first place. According Dr. Jerry Klein, chief veterinary officer for the American Kennel Club, this behavior is sometimes a response to symptoms that were already present. "When dogs go outside and gobble grass really quickly, there's usually a reason, an instinctual behavior to try to induce some kind of gastrointestinal reaction," he tells Mental Floss. "When they realize they're nauseous or something else, the only thing they know how to do is to force themselves to vomit. Some dogs that eat grass chomp it down without really chewing it, and often times may vomit something up and that's how they treat themselves."

Despite it being a common issue for pet owners, little research has been done into why dogs eat grass. It's likely that stomach problems only explain this behavior part of the time. In other situations, a dog may eat grass for the same reason it eats your shoes or the groceries you left on the kitchen counter: Because it's hungry, anxious, or bored.

So how can you tell when your dog is munching grass for pleasure and when it's trying to induce itself to vomit? Pay attention to the way it eats. Dogs are omnivorous, meaning they eat both plants and animals, so just eating grass alone normally won't be enough to make it sick. But if a dog is gorging on grass faster than it can chew it, that may be an indication that something is wrong. Whole blades of grass can irritate a dog's throat and stomach lining, potentially causing them to throw up if they swallow a lot of them in a short amount of time.

No matter the reason for your dog's grass-eating habits, Klein says that they aren't a major issue. The behavior shouldn't be encouraged, as grass in public places can potentially carry harmful chemicals like pesticides, so stop your dog if you see it grazing. But if it shows no signs of illness or discomfort afterward, there's no need to rush it to the vet. "If I see a dog eating grass, I'm not going to panic. I would try to stop it and then monitor it to see how it acts in the next 15 to 20 minutes. Look at how the dog's acting, its body shape and movement, and the feeling you get from the dog."

One condition related to vomiting that would warrant a trip to the vet is something called bloat. This happens when a dog's stomach fills with air, causing it to retch without actually throwing anything up. This is a medical emergency and can be deadly if left untreated.

A dog who vomits after eating grass and looks happy afterward, on the other hand, is probably not a cause for concern—though you may argue otherwise when you're steam-cleaning your carpet.

Have you got a Big Question you'd like us to answer? If so, send it to bigquestions@mentalfloss.com.

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