Slashdot Mirror


Study Finds Dogs Are Brainier Than Cats (vanderbilt.edu)

Science_afficionado writes: Are you a cat lover? A dog lover? If so, you may be interested in the first scientific study to actually count the number of cortical neurons in the brains of a number of carnivores, including cats and dogs. Bottom line: Dogs have about twice as many of these "little grey cells" as cats. These "little gray cells" are associated with thinking, planning and complex behavior. The study found that dogs have about 530 million cortical neurons while cats have about 250 million. (For comparison, the human brain has 16 billion.) Another interesting discovery was that carnivores have about the same ratio of neurons to brain size as that of herbivores, "suggesting that there is just as much evolutionary pressure on the herbivores to develop the brain power to escape from predators as there is on carnivores to catch them," reports Vanderbilt University. "The study's findings also challenge the prevailing view that domesticated animals have smaller brains than their wild cousins. The ratios of brain size to body weight of the domestic species they analyzed -- ferret, cat and dog -- did not scale in a significantly different manner from those of their wild relatives -- mongoose, raccoon, hyena, lion and brown bear."

The results of the study are described in a paper titled "Dogs have the most neurons, though not the largest brain: Trade-off between body mass and number of neurons in the cerebral cortex of large carnivoran species" accepted for publication in the open access journal Frontiers in Neuroanatomy.

10 of 330 comments (clear)

  1. WE've won! by Anonymous Coward · · Score: 4, Funny

    Cat lovers, cower in the corner with tails between your legs.

    Next battle to settle: vi vs emacs.

  2. Social Complexity by theweatherelectric · · Score: 5, Interesting

    Social complexity seems to be a driver for intelligence. Hyena society is quite complex with clans and a dominance hierarchy within each clan. Hyenas seem to have theory of mind and seem to practice tactical deception. Hyenas are also good cooperative problem solvers, outperforming primates.

  3. They may have more cells... by MoarSauce123 · · Score: 5, Insightful

    ...but cannot do their business on their own in a designated spot (cats can do that) and are inept to spend a few days alone (no problem with cats). I have come across many dumb dogs that bark constantly for no reason, but at least as many clever cats. More cells does not make one smarter.

    1. Re:They may have more cells... by DNS-and-BIND · · Score: 4, Informative

      The dogs that bark constantly are bored to tears because their owners neglect them. People get dogs because they see that cute puppy and feel warm inside. It's all about the feels. Then the puppy grows to a dog and it's just annoying to deal with. Stick it outside leashed up and feed it once in a while. The feelings the dog generates are mostly negative and people get angry at the dog for making them feel this way. Honestly people shouldn't be allowed to get a dog unless they pass an empathy test but that would infringe on people's FREEDUMBS so we can't do that and millions of dogs suffer needlessly before they finally get taken to the vet to be killed for being inconvenient.

      --
      Shutting down free speech with violence isn't fighting fascism. It IS fascism!
    2. Re:They may have more cells... by AmiMoJo · · Score: 4, Interesting

      Cat's use a brute force approach to intelligence.

      They don't understand cause and effect, and don't have object permanence (if they see a toy they don't understand it is the same toy they had yesterday, they just know it's /a/ toy and smells like them so it must be theirs). To make up for this, they are curious and patient. They will try things over and over again to see what happens, and learn through positive and negative re-enforcement.

      This can lead to some surprisingly clever behaviour. We have all see videos of cats opening doors and the like, they the most common one is to learn how to manipulate their staff. For example, adult cats don't meow in the wild, but quickly learn that it's the most efficient way to summon their servants and signal that it's time for a massage. Same with food, lot of people swear that their cats are fussy and will only take hand-fed choice cuts of chicken, but actually they just learned to keep ignoring food that is offered until the good stuff comes out.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  4. Re:Seriously? by amalcolm · · Score: 4, Insightful

    Does that mean I get smarter as I lose weight?

    --
    Time for bed, said Zebedee - boing
  5. I doubt it by nospam007 · · Score: 5, Funny

    My dog runs 200 times to fetch a stick I throw, my cat gives me the 'fuck you' look the very first time and goes for a nap.

  6. Re:There's a reason we don't train Cats by goose-incarnated · · Score: 5, Funny

    they can't be trained because they're rather stupid

    How well can you be trained ? Would you be able to obey simple commands such as sitting on the ground, or fetching a ball, in return for being told you're such a good boy ?

    Ever seen people play sports? You're disproving your own point here.

    --
    I'm a minority race. Save your vitriol for white people.
  7. Re:Border Collie by hierofalcon · · Score: 4, Insightful

    I've never seen a cat skeleton in a tree either.

  8. Re:What about the various cat/dog breeds by The+Grim+Reefer · · Score: 5, Interesting

    As the article points out wild animals seem to be brainier, however a wolf doesn't have a lot of traits that we equate to intelligence that our pet dog has. For examples Dogs can understand the abstract concept of pointing, while wolves cannot. Dogs can be taught a lot of tricks and behaviors that may be outside their normal instinctive behavior, while wolves do not. However Dogs bark and make a lot of noise, and are much more disorganized in hunting by themselves, which would put them at a disadvantage in a non-human world.

    As someone who has owned a wolf in the past, I can assure you that you don't know what you are talking about. I was able to train him to sit, stay, heel, lay down and come in less than half a day. I never saw anything quite like it. I could also point at damn near anything and tell him to get it, and he would bring it to me. This included flies that got into the house. On the occasion that one would land out of his reach (basically the ceiling) he would sit and wait for it to move again. I just wish he would have taken them to the trash can rather then bring them to me.

    He was a great companion rather than a pet, but I would never think about doing that again as they are much more independent thinking than a dog. If there was someone or something he felt was a threat, it didn't matter what I said, he wanted to kill it. There were two occasions that I caught him mid air going for someones throat. After that I made sure to keep him away from anyone that he didn't like. He would also pin people to the floor if they moved around me in a threatening manner. Two things that I never quite figured out were why he hated bicycles and anyone having a gun other than myself. If anyone carried a gun onto my property, he would take it and bring it to me.