Although I have always said that the dogs object to the restraint more than the actual nail grooming, Dr. Milani has written an article that very much helps to explain the importance of "feet" to a canine. It helps in understanding just why they feel so strongly about their most precious "peds". (don't even for one minute use this as an excuse for ducking out on the nail grooming which I believe is critical for behavior, not just good health), but it is a good to know understanding........
http://www.mmilani.com/foot_sensitive_dogs.html
Enjoy the read.