Lucy...that was so funny because just today I went to Pet Smart and bought some new clippers to shave our 2 dogs, on Golden Retriever and one mix GR, black lab, and chow. It's taken me all afternoon to summer shave and bathe both dogs and they are completely nekked! They look so pitiful, but they feel so much better, I'm sure. It's getting really hot here now and they had a ton of hair and undercoat. Plus, the shedding was driving me crazy. They actually look worse than that dog in the advert.
I should take a picture, but I'm sure they'd be embarrased.