If you are going to start clipping your adult dog's nails, here area few hints that you may find helpful:
If your dog finds both kinds of clippers intolerable, an alternative tool is a nail grinder, an electric tool that sands nails down. These offer great control, but take longer than clippers and some people (and dogs) find the sounds and vibrations they produce unpleasant. Ask your veterinarian or groomer for advice about what types of nail trimmers are best for your dog and how to use them properly.
Helping Dogs with Sensitive Feet Some dogs don’t like to have their feet touched, so it’s always a good idea to get your dog used to it before you attempt to clip his nails—ideally, this should start when he’s a pup. Rub your hand up and down the leg and then gently press each individual toe, and be sure to give her lots of praise and treats! Within a week or two of daily foot massage, your dog should feel more comfortable with a nail trim.
If you’ve spent time cutting your dog’s nails, you may have noticed that it’s the time we spent hesitating or slowly increasing pressure on the nail clipper that increases the dog’s nervousness and her awareness of the pressure of the blades on her nails. So a tool that helps me be quick and assertive about it is a good tool! :P
Clipping your dog’s coat is easier than you might imagine
Truth About Clipping Dogs - Animal Behavior College
With the dog's ankle cradled in your palm and pads facing up as described above, use your fingers to spread his toes and push the nail you want to clip upward into view. For these first few sessions this is important just nip the very tip of the nail with the clipper so that there's no way you're going to cut too far and hurt him. It means that you're going to have to live with longer nails for awhile, but it's critical for the dog to learn that nailcutting might be uncomfortable but it doesn't hurt. After you've nipped the first nail, praise him and give a treat (but don't let go of his foot!) and move on to the next toe. If your dog's anxiety makes you constantly put off cutting his nails, think again. Excessively lengthy nails not only can split, bleed and induce infection, they can also negatively affect your pet's walking style and can even occasionally trigger skeletal issues. Canine nail clipping isn't just a matter of looking tidy; it's an important health and safety issue.Many dogs dread getting their nails clipped about as much as some humans detest dentist appointments. Despite the intense anxiety these grooming sessions might cause your poor pooch, the task simply has to be done. Neglect of a dog's nails can bring upon a lot of unnecessary distress.4. Enlist The Help Of A Friend. If you know that clipping your dog’s nails is going to be a challenge, enlist the help of a friend to be the treat-giver! Set them up with enough goodies to keep your dog occupied while you work.