This is another beautiful story on the Animal Rescue Site about a dog and the woman who rescued her. It took a year for this woman to be able to pet her. A year. She was patient and let Jazzy set the pace.
Patience is the key to many behaviors owners regard as problems with their pets.
Contact Korrect Kritters for help with your shy or fearful pet.
This video is an excellent example on how to get your dog to choose to participate in nail trimming. She uses no force or coersion.