Retrieving, Thinking and Philosophy of Mind

Quite a long time ago I read a philosopher's paper which I do not remember well. I think it was Dennett, and I think it was on decision-making, but what I do remember vividly is that he wrote about throwing two tennis balls for his Labrador. The dog would race back and forth between the two for quite some time, then choose one apparently at random when he was tired enough.

Now, what is surprising here is that I didn't try this on one of my own dogs sooner. I think this must be a paper from when my husband was in graduate school, when we had a dog who didn't care to fetch, or from my undergraduate program, when the dog was at home with my parents and school had nothing to do with my retreats there. However, Dennett was recently brought back to my attention by a secondhand social contact, and I tried to recall if this was his story.

Then I formed a hypothesis. Not all dogs are Labradors, bred to take directions. Some breeds, particularly herders, are required to make snap decisions on their own, and the German Shepherd Dog is one of those breeds. I expected that one object would bounce more or further, and that my dog would go after that one. Then, of course, I whistled for Dustin.

His current obsession is magnolia cones. They bounce and skitter tolerably well, and saved me the trouble of finding two reasonably well-matched balls in this chaotic household. Also, it's not too hard to fit two in one hand to throw together. And it turned out I was right: one cone always activated the naughty-sheep protocol by bouncing further, and he chose that one without hesitation every time. At first he would bring it to the less-traveled cone, good herding dog that he is, intending to bring both, but then he would switch to retrieve protocol on realizing only one would fit in his mouth. Then, of course, he brought the bouncier one.

I suppose the moral of the story is that before one generalizes about the simpleness or complexity of canis lupus familiaris minds, one must first examine multiple breeds. Labradors, as my friend Mary is wont to say, were bred to do what they were told, however it might be conveyed, by men who went to the training field with a six-pack and a gun. Those who stayed in the gene pool were the ones who could figure out how to what they were told, not those who made up new ways to do things. Herders, on the other hand, have to make snap decisions on controlling the individual sheep (or ducks, cows, reindeer, what-have-you) to conform to the large-scale directions given by their handler. Two or more lambs (see previous parenthetical) may take off in different directions at once, and the herding dog has to have a plan for that or devise one on the fly.

Of course, that does lead to an inventive streak the rest of the time. Sunny took to doing her obedience exercises with flair, and I suppose that the AKC guidelines don't say the dog can't walk from front to finish on her hind legs while whooping to the ceiling. At least, they didn't before she came along. I haven't checked the handbook lately. Dustin, asked to herd ducks, decided it would be more fun to push them into a group if he could then excite them into standing tall and quacking wildly, then do a sort of Evel Knievel routine over them. He seems to feel that it's rude to boss around such small and harmless creatures -- give him a good big rude sheep any day.

Or, of course, a naughty magnolia cone.

Research on Scent Dogs

You may want to research a little of the science on canine perception if you like to know how things work before you start trying to do them. How well should you know the nose?

There are several ordinary-language works on how your dog perceives the world. One of the better ones is Chapter 5 of Stephen Budiansky’s The Truth About Dogs. While other sections of the book, such as the pro-alpha stance and the aggression discussion, may be debatable, he’s done a very nice job of summarizing the science on canine perception, particularly on sight and scent. Too, the illustrations of color perception are worth a thousand words. You will see very soon why your silly dog can fetch his blue toy out of the grass so much faster than his red one! Knowing this, you can make your scent articles easy to see for you and invisible to him or plant your decoy in the woods wearing bright red in summer so you can watch your dog's alert as you get close.

For scent work, Pearsall and Verbruggen have an excellent first four chapters in Scent. Their discussion of skin rafts, the microscopic few-cell bits of our surface which we shed constantly, is coherent and understandable, though it may give clean freaks the heebie-jeebies for a little while. Likewise, the length of time a fingerprint can persist is enlightening when your dog takes off on a trail you were pretty sure couldn’t possibly be there. The training portion contradicts some of the science end of the book. I bought the book used, refer often to the first parts for understanding how human scent is deposited and perceived, and largely ignore the rest.

If you want to get technical, try the “Sources” section of the Budiansky and start Googling. There are some excellent articles out there, though many of them are hidden behind the academic-access filter. Another resource is to accept common-source articles. For instance, through searching one academic article, I found accessible ones which cited it, though I could only reach the abstract of the original. “The Use of Scent Detection Dogs” in the Irish Veterinary Journal is beautifully thorough and relatively recent, published in 2006. I have to agree with the final sentence: the limit on how we can utilize a trained dog’s nose is primarily our own imaginations. Find fire ants? Exterminated mice for safe removal before decomposition? The use of human growth hormone by athletes? First, someone has to think to try it.

Even if you never train your dog to search for a specific thing, knowing how sensitive his nose is may make you more likely to listen when he wants you to know you smell different to him. Untrained dogs can still alert their owners to everything from cancer to pregnancy, whether the children are smoking something they shouldn’t, and household risks. However, the humans of the household still have to be willing to take the “I smell something different” body language seriously.