Trimming dogs nails you’ve got to be careful. It’s best to have two people to do this. Just start at the tip of the nail & clip small a little at a time. A dogs nails has nerves & blood vessels & it would be very painful to clip into this. Clip only to the pinkish color of the nail, which is the quick. If you are unsure take your pet to a groomer & watch how far to clip them.