My dobie Lucy is nuts about getting her nails done too,, but we found that holding her tightly ,, no give at all,, in the vets works great,,, she hates it,, but at least she isnt biting or growling,,,,,

Did your puppers have a bad experience when younger? Its awfully hard to overcome phobias,, but it can be done... be patient,,, taking to dog to the vets is the best I think..