Regular
human nail clippers work just fine on a cat, but Felder also recommends using a Dremel — an electric, rotating stone that you can buy at any hardware store.
For tiny puppies, you can start
with human nail clippers, but eventually will need clippers designed to cut the dog's toenails at the proper angle without splitting or crushing the nail.
You may use either
a human nail clipper or one that is designed for cats and small animals.
You can use
human nail clippers or nail clippers designed for cats and other small animals.
You also can use
human nail clippers.
It would be better to choose either the guillotine or
the human nail clipper.
Do not use
human nail clippers or scissors as you may end up crushing or splintering your companion animal's nail.
When clipping cat nails, I prefer to use
a human nail clipper or a special nail clipper for cats that looks like a small scissor with curved cutouts in the blade.
Never use
human nail clippers or scissors.