[Cross-posted at Psychology Today]

cat-loveWhether animals can experience romantic love is unknown. But there is some evidence that they are capable of experiencing the same range of emotions as we can. The brains of many mammals are surprisingly similar to the human brain. Take as an example the brain of a cat. A cat’s brain is small compared to ours, occupying only about one percent of their body mass compared to about two percent in an average human. But size doesn't always matter. Neanderthals, the hominids that went extinct more than twenty thousand years ago, had bigger brains than Homo sapiens, but they probably weren’t smarter than the Homo sapiens that beat them in the survival game. Surface folding and brain structure matter more than brain size. The brains of cats have an amazing surface folding and a structure that is about ninety percent similar to ours. This suggests that they could indeed be capable of experiencing romantic love. But we will probably never know for sure.

There is one thing we do know though: your dog or cat doesn’t regard you merely as a food dispenser. Pets as well as zoo animals form strong attachments to their caregivers. As attachment is a form of love, animals are indeed capable of loving their caregivers.

Dogs have been reported to love their masters so deeply that they mourn their death for many years. Such was the case of Greyfriars Bobby, a Skye terrier in Edinburgh, Scotland. He served as Constable John Gray’s companion, until Gray’s death in 1858. After Gray’s funeral, Bobby was spotted sitting on top of his master’s grave in Greyfriars Kirkyard. The loyal police hound is reported to have spent every night at his master’s grave until his death fourteen years later.

dogsfmriThe attachment of dogs to their owners has been confirmed in a study conducted by Daniel Mills, a British specialist in clinical animal behavior. The study used an adaptation of Ainsworth’s strange situation paradigm, in which the researchers observed the reaction of dogs and cats in response to their owners and strangers. He found that securely attached dogs tended to behave similarly to infants when their owners left, whereas cats tended not to do that. If anything, cats tended to have more of an avoidant attachment style, often ignoring their owners and happily greeting strangers. These results, of course, do not show that cats are incapable of attachment. While cats no doubt tend to have a more avoidant attachment style than dogs, most of us know from anecdotal evidence that there can be enormous differences in how attached cats are to their owners. My own two cats, Bertrand Russell and Roderick Chisholm (named after philosophers like my other cats) are undoubtedly anxiously attached, clinging tenaciously to me to the point of annoyance.

While it seems relatively uncontroversial that dogs can be attached to their owners, and that the owners assume the role of caregiver, there is also evidence that dogs can temporarily take over the role of caregiver. Dogs seem to be attuned to the emotions of their owners and are able to act as a loyal companion in times of need. In a study published in the September 2012 issue of Animal Cognition, University of London researchers found that dogs were more inclined to approach a crying person than someone who was talking or humming, and that they responded to crying with submissive behavior. According to the researchers, this contrast indicates that the dogs’ response to weeping wasn’t simply the result of curiosity but was based on a primitive understanding of human distress. These findings indicate that when a dog comforts his sorrowful owner, the caregiver-recipient roles are sometimes reversed. The dog temporarily becomes the caregiver, which suggests a more sophisticated attachment pattern in dogs than in infants.

'These results have also been confirmed with brain scans. Gregory Berns, a neuroscientist at Emory University, used fMRI neuroimaging to test the brains of dogs. This is not simple feat. fMRI scans only work if the participants lie completely still, which dogs normally aren’t capable of. However, Berns trained his dogs to lie still in the tight compartment of the scanner, which made the brain imaging feasible. The results were astonishing. Berns’ lab team found increased activity in regions of their brain associated with attachment, empathy and a theory of mind in response to their owners. A theory of mind is a belief system about what others think and want that is continually updated. So, dogs apparently wonder what their owners are thinking about.

TikaKobukAnimals also seem capable of experiencing attachment love for each other. The awe-inspiring story of Tika and Kobuk, two malamutes who had been companions for years, testifies to this. Together the two dogs had bred and raised eight litters of puppies. But Kobuk was a bit of a bully. He would eat Tika’s food and shove her away if he got the chance. He would also attempt to steal away any attention people gave her. But the bullying came to a complete hold when Tika developed cancer in her leg. Kobuk’s behavior changed entirely. He let Tika sleep on the bed, while he rested on the floor. He groomed her face and neck and would not leave her side. Tika’s leg eventually had to be amputated. In the beginning it was quite a challenge for Tika to walk on three legs. When she stumbled and fell Kobuk would try to help her. He even saved Tika’s life when she was going into shock during her recovery from the amputation. Kobuk was barking to wake up the owner, who rushed Tika to the hospital. Thanks to Kobuk’s attention and love, Tika survived. Kobuk continued to care for Tika while she was still recovering. But once Tika had fully recovered and had learned to walk on three legs, Kobuk was back to his old behavior.

Animals also sometimes form attachment relationships with members of other non-human species. The BBC documentary Animal Odd Couples features several unusual attachment relationships, among others that between Anthony, a giant lion, and Riley, a little coyote. When Anthony and Riley were brought to “Keepers of the Wild” animal sanctuary, they were only about a month old. They immediately bonded. They enjoyed playing and grooming each other. When they arrived at the sanctuary, they were the same size but that quickly changed. The lion rapidly outgrew the little coyote. Despite their extremely different physique, their early bond continued into adulthood.

goosetortoiseAttachment love is not restricted to mammals. In his book Mind of the Raven Biologist Bernd Heinrich argues that since ravens have long-term mates, they must feel a form of attachment for each other. Otherwise it is difficult to explain what keeps the couple together for a lifetime. Although not all birds mate for life, many do. Brant geese are no exception. The BBC documentary features a male Brant goose who has chosen a forty-five-year-old female Aldabra tortoise as his soul mate. He chases away anyone who tries to get near her, ensuring that she gets to eat her crisp lettuce without any interference. The hefty female tortoise contently puts up with his protection and care, in fact she truly seems to enjoy it. A truly kooky couple.

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20 responses to “Can animals love?”

  1. Anne Jacobson Avatar
    Anne Jacobson

    When one reads the details of cat hetero sex, it seems a wonder it happens more than once for each female.

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  2. Berit Brogaard Avatar

    Yes, and cats don’t ovulate until they actually mate. So, all the talk of ovulation and heightened sexual interest in females doesn’t seem to apply to cats.

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  3. Charles Pigden Avatar

    Re female cats. It seems that when they are on call a) that they genuinely want to do it but b) that they don’t enjoy it much. So its a non-hedonic desire. What they want is the sex not the pleasure from the sex as there isn’t any.

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  4. Berit Brogaard Avatar

    Nature is cruel. I am glad my male cats are castrated.

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  5. Anne Jacobson Avatar
    Anne Jacobson

    About cats greeting people: when we had two female siamese litter mates, the excessively dominant one used to rush to the door whenever anyone came to see us. A well-known (in Texas) vet said it was dominance behavior, though it looked like friendly behavior. She was vetting newcomers.
    The littler one was extremely attached to me; one time we were away for over two weeks and she went into a decline, which eventually cost us about 2K in fancy vet ultra-sound scanning, blood tests, etc bills. We referred to it as Rosemary’s revenge.

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  6. Anne Jacobson Avatar
    Anne Jacobson

    I should add another odd bit of Rosemary-Coriander behavior. Rosemary was at one time put on steroids to clear up a severe digestive track problem. She gained a whole pound, which took her to 6 lbs. the bully Coriander, not on steroids and weighing 6 lbs originally, also gained a pound. When Rosie lost the pound, so did Corie.

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  7. Berit Brogaard Avatar

    That’s really interesting. My cats also tend to eat about the same, which means that if one is sick, the other loses weight as well.

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  8. Alan White Avatar
    Alan White

    Having lots of pets over my life (I’m 60) clearly dogs have emotional attachment to us as we have for them, and probably the common pack-animal/social structure of our species helps account for that. Cats as more solitary creatures tend to have more personal/individual tales, though the vast variety of them show more flexible adaptations than a simple covering explanation evinces (they’re selfish, unemotional, etc). Just last night my now only pet, a cat (I’ve had as many as 6 dogs/cats/birds at once) Willie (William Jefferson Kitten) who’s 13, jumped on my bed and laid down near me. In a few seconds I felt his paw on my arm, placed there very deliberately. For my warmth? To convey something more? I’ve no idea. I do know this. How you treat them has a huge influence on how they treat you. What a shock. But not. Big (enough) brains interlocked with one another chronically so as to establish common habits. Kant meets Aristotle, if we take the Kantian high-road on this.

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  9. Sara L. Uckelman Avatar

    Two points occurred to me while reading this —
    One, there is a lot of evidence for dogs fulfilling the care-taker role as opposed to the cared-for role when you look to service dogs. Of course, these dogs are cherished and loved and cared for by their owners, but the dynamic is different from the ordinary owner/pet relationship where the owner’s life and safety depend on the pet.
    Two, I read once an article about how the relationship that domesticated cats have to their owners is often very similar to that between kittens and their mothers (witness the act of kneading), and that one result of domestication is that domesticated cats are more akin to kittens than their feral or semi-feral counterparts. (Alas, I remember no further details, including whether I read this in a scholarly source or in some random news article. But it stuck with me.)

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  10. Anne Jacobson Avatar
    Anne Jacobson

    When she was on steroids, she had it mixed in her food, so they ate separately. Not that there wasn’t another way they were coordinating.

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  11. Mohan Matthen Avatar

    Marvellous example of a dissociation between wanting and liking, which the psychologist Kent Berridge (and others) have written about. So here’s a problem: cats get by without hedonic rewards for having sex. Their desire gives them sufficient motivation to copulate and reproduce. So what does sexual pleasure contribute? What do humans gain in evolutionary terms by taking pleasure from sex?

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  12. Mohan Matthen Avatar

    Very interesting post, Brit. Tell me: do you think pair-bonding is evidence of romantic love? What do swans or ducks feel for their partners? Or is this a bad anthropomorphizing question?

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  13. Eric Winsberg Avatar
    Eric Winsberg

    I’m curious how the expression “romantic love” is being used in such a question. I suppose my view is that some of our emotions are clear cases of biologically rooted affect programs (some obvious cases might be fear and anger, maybe sadness and depression) and some are clear cases of complex mixes of biological affect programs and other elements that are assembled by socially conditioned (constructed?) factors. Maybe existential dread would be a clear case of the latter, I don’t know.
    But I guess I also would have thought that using an expression like “romantic love,” when it is specifically held out as distinct from ordinary attachment (even specifically to a mating partner) would be a clear way of signalling that one meant the very specifically human concoction of a variety of biologically based affects with various socially conditioned attitudes are other such things. I’m not sure what would count as evidence that a non-language-using animal was feeling “romantic love” if that is conceived of as something over and above attachment to one’s mating partner.

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  14. Berit Brogaard Avatar

    Hi Alan and Sara,
    Yes, that makes sense. My cats follow me around the house. They are exactly where I am. If I take a shower, they are sitting on the sink waiting for me to finish. If I am in the kitchen, they are in the kitchen. If I am on the couch or bed, they snuggle up close to me and each other. They also have learned to recognize my facial expressions and certain verbal expressions. If they scratch the furniture, I just have to look at them or quietly ask them to stop, and they stop. If I mention the word ‘food’ (in Danish), they run to their bowls.

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  15. Berit Brogaard Avatar

    Yes, what I had in mind was something like the chemical aspects of falling in love. Those seem biological and can even be sparked by additional adrenaline in the presence of another person.

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  16. Berit Brogaard Avatar

    I think the goose from the Odd Couples might just be in love with, or have a crush on, the tortoise. So, I guess I think some of the chemical aspects of love that we feel can be felt by non-human animals and can draw them to each other.

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  17. Berit Brogaard Avatar

    I would be interested in knowing the answer to that question as well.

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  18. Clerk Avatar
    Clerk

    Are those Russell and Chisholm in the first pic?

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  19. David Auerbach Avatar
    David Auerbach

    For the dog-centric I find the most reliable take on dog behavior research is here: http://www.patriciamcconnell.com/theotherendoftheleash/applied-ethology-translations-and-mis-translations
    For a well-written and nuanced book-length account of working dogs with nice insights about handler/dog pairing, see http://catwarren.com/the-book/ .

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  20. Berit Brogaard Avatar

    No, but the red cat looks almost like Chisholm. Russell is black.

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