I have the same problem with my dog Sammy! I would take
your friend to the vets and let the pro's handle your friends behavior.
They know how to deal with psycho dogs and there nails!
Or even a professional groomer! It is not that expensive to have
nails trimmed. I tried sedating Sam and it did not work out well
either. So I took him to Petsmart and had him put on a grooming
table and muzzled him and they got the job done. I never would
have been able to get him under control long enough to do all his
nails by myself. I believe Petsmart has now changed there nail
trimming and added extra services so the charge is going to be higher. I would call around and see who has the best prices for
nail trimming. Good luck!