When I'm doing puppies for the first time, or a scared dog, I start out holding the clippers (turned on) near them, and giving lots of praise. Then I rub the body of the clipper--not the blade, slowly around on part of their body, usually the hip, sort of like petting the dog with the clipper body.
I can then start clipping, starting at the back of the dog and working forward, doing the head and ears last. This gives them time to get used to the clippers. Lots of praise!
Since I work in a grooming shop I have to do it all in one go, but with my own dogs I have the leisure of spreading out the grooming if need be. (But I usually do it all in one go, get it over with for me and the dog

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I learned a technique from a book called "Calming Signals" by Turid Rugaas (sp?) It's a very small book of signals that dogs use to give reassurance to other dogs. Two of them are lip licking and yawning. I probaby look like a fool at work, but I lick my lips and yawn a lot when I am grooming dogs. The results are amazing, they really respond!
