Wednesday, 25 September 2013

Why Are Some Breeds of Dog More Popular Than Others?

A happy white standard poodle with a spiky collar against a pink background
Photo: bikeriderlondon/Shutterstock
There are so many breeds of dog, it can be hard to choose which one you'd like most. Some are always popular, while other breeds rise or fall in popularity.  A new study by Stefano Ghirlanda et al 2013 investigates whether changes in the most popular breeds over the years reflect personality characteristics, health, or fashion.

We think of different breeds as having different temperaments, such as the “friendly and gentle, but also alert and outgoing” Siberian Husky, the “alert, lively, active, keen” Russell Terrier “with a very intelligent expression,” or the “calm, confident and courageous” Rottweiler. The first question the scientists asked was, is this true?

For their answer, they turned to the C-BARQ, a standardized questionnaire about doggie behaviour and temperament. It has 14 scales including trainability, separation-related behaviour problems, energy levels and so on, and has been completed for over 12,000 dogs. They narrowed it down to a list of eighty different breeds, with data from a total of more than 8,000 dogs.

The results showed that different breeds do have different personalities. The results for the top ten breeds are shown in the figure below, with each coloured slice of pie representing a different C-BARQ scale. The most interesting one is that of trainability, which is shown by the green slice in the top left. Many of the top breeds score highly for trainability. 

The Golden Retriever scores very high on trainability, and very low on everything else (mainly problem behaviours). Is this the perfect breed of dog?! The Poodle and Labrador Retriever are also highly trainable, with few problem behaviours.

Several of the top ten dog breeds have low scores for trainability, including the Chihuahua, the Miniature Schnauzer, and the Dachshund. Chihuahuas score highly on several problem behaviours including fear of strangers, fear of dogs, dog rivalry and touch sensitivity. The Miniature Schnauzer has high scores for chasing, dog aggression and excitability, amongst others, while the Dachshund has a tendency for dog aggression, stranger aggression and separation problems.

Despite this, they are very popular breeds, suggesting that other aspects are important in people's choices. And of course, part of the reason they exhibit these problems could be because small dogs tend to be treated differently (Arhant et al 2010).


C-BARQ subscales for the top ten dog breeds in the US
Source: PLoS One

But personality isn’t everything. Some breeds of dog live longer than others and have fewer health problems. For data on this, the researchers turned to previously published papers which rated breeds for longevity and health. The surveys showed an average lifespan of 11.45 years. Variability was large, ranging from 6.3 to 14.3 years. In general, large companion dogs have a shorter longevity (8.5 years) than medium (10 years) or small companion dogs (12.5 years).

They got information about the popularity of different breeds from the American Kennel Club, which has data going back to 1926 for over fifty million dogs. This study considered data from 1926 to 2005, and for the eighty breeds for which the behaviour and health data was available.

In 1926, the most popular breed of dog in the US was the German Shepherd, still very popular today. The Boston Terrier, Chow Chow, Fox Terrier and Pekingese round out the top five for that year.

There was no correlation between breed temperament and popularity. Nor was there any correlation between longevity and popularity. However, there was a significant correlation between the popularity of a dog breed and the number of inherited health disorders that breed tends to suffer from. In other words, the more popular breeds tend to have more health problems. The authors say this suggests "health considerations have been secondary in the decision to acquire dogs as well as in dog breeding practices."

They also found that between 1996 and 2005, the breeds with the most health problems declined in popularity. This could be because of increasing awareness of the health problems that go with those breeds. 

The authors say that “If anything, our results suggest that breeds can become popular despite problematic behaviour, rather than because of good behaviour.” It seems that behaviour and health are not the main reasons why people choose particular breeds of dog; perhaps fashion and looks are more compelling.

What breed(s) of dog do you have, and why did you choose them?

Reference
Arhant, C., Bubbna-Lititz, H., Bartels, A., Futschik, A., & Troxler, J. (2010). Behaviour of smaller and larger dogs: Effects of training methods, inconsistency of owner behaviour and level of engagement in activities with the dog. Applied Animal Behaviour Science, 123, 131-142 DOI: 10.1016/j.applanim.2010.01.003
Ghirlanda S, Acerbi A, Herzog H, & Serpell JA (2013). Fashion vs. Function in Cultural Evolution: The Case of Dog Breed Popularity. PloS one, 8 (9) PMID: 24040341

6 comments:

  1. interesting info, I am shocked the Shetland Sheepdog didn't make it on the "desirable" list. Other than being huge barkers they are amazing dogs. I guess some breeds are more "popular" just like some people are more popular than others. www.daktoasden.net

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  2. I would love to see the characteristics for the Rottie. We got our first by accident, when neighbors were going to dispose of theirs, and we asked to have him. Wonderful, steady, well behaved (also well trained before we got him.) We have had 3 since, not all the same, but love the calm non-reactive personalities. Have a Rottie x Boxer, who is calm and gentle with everyone, but is a barker. The others rarely bark. the purebred female may bark every year or so. I have been a champion of big black dogs for over 40 years, having had black labs, Dobie, Lab x GSD. I do believe training, jobs, and leadership make a difference with all dogs. All ours are rescues, but that makes them no less lovable or valuable to us.

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    1. Your dogs sound lovely. I looked up the Rottie for you, and it scores highly for trainability, as you'd expect. The next highest scores are for attachment & attention, and chasing. (There was a number missing from the chart I consulted so I didn't get all the scores). The data is available online at http://figshare.com/articles/C_BARQ_survey_on_dog_behavior_and_temperament/715896

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  3. I have Australian Cattle Dogs, which are not for everyone and hopefully won't make the list of "most popular" and have the breed ruined.

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    1. I know what you mean. Some breeds are not for everyone, but I find it wonderful just how well dogs can fit with their owners - choice of breed is such an individual thing.

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  4. I'm a vet tech, and comment almost daily that wouldn't it be an amazing thing if breeders selected for health? For traits such as healthy teeth, strong heart or clear skin? We see dogs and cats daily that are victims of irresponsible and cruel breeding. Why does an animal need a nose a certain length, the ear a specific shape or the eye a certain color?

    I like Border Collies and herding dogs. One of the great things about them, to the best of my knowledge, they are not an AKC breed. They have been traditionally bred and selected for aptitude and temperament. What a novel idea. If the AKC gets their hands on them, the breed will became physically uniform and most likely lose the personality that makes them special.

    Border Collies aren't for everyone. They require a lot of exercise and a job. If they aren't given those things, they just become tortured souls. If only folks would look more at the emotional needs of the animals they acquire, and look less at the physical attributes they deem so important.

    And finally, the traits that are bred in dogs and some cats can really only be considered flaws. If we had a child with a face flattened like a pug or a persian cat, with difficulty breathing and malformed teeth, we would love it, but probably perform surgery to make it happier and healthier. Why do we intentionally breed characteristics that are health liabilities in our pets?

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