When I walk my dog in the park I see many other dogs there too – collies, Alsatians, poodles, retrievers, Rottweilers, Labradors, terriers, mixtures of all these and more. My own dog is very much on the mixture side of things. I do not think of these different types of dog as ‘races’ of dog. For dogs, ‘breed’ is a concept that is helpful in identifying type, so people might ask what breeds combine in my dog to give her such a cheerful appearance. But they are all dogs, and from their point of view that is the key thing that makes them so interesting to one another.

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