I love dogs. I have three of them.  It amazes me how these animals and humans can get along so well. They are truly our companions and some may even call them guardian angels.  I have always been interested in why certain dog breeds look the way they do. Also, I like to try and understand the history of the artificial selection of certain traits that breeders have been focusing for 100's of years. I think that having an understanding of what a dog is bred for (and spaying and neutering)  is truly the answer to preventing an increase of the number of dogs in shelters.  So, of course, I want to use dogs as introduction to discussion evolution with high school students. Everyone knows what a dog is and is familar with the various breeds of dogs.

How do you get the discussion started?

Luckily, I am not the only person interested in how dogs and humans started hanging out together. It turns out that National Geographic Magazine has a great 

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