The correct way to cut dog nails:

1. First, let the dog be in a comfortable position. You can put the dog in a high place or hold it in your arms. On the legs, in short, it can make the dog quiet and not move around.

2. Grab one of the dog's paws, push aside the hair near the nail to expose the nail, and then observe the location of the dog's blood line.

3. If you can clearly see the blood line, just cut it about 3 mm in front of the blood line. Note that the nail clipper should be kept perpendicular to the direction of the dog's nail curvature.

4. If you are not sure where the dog's blood line is, the owner needs to trim it slowly little by little until you see a white core inside the nail, then you need to stop.

5. After trimming the nails, you can use a nail grinder or nail file to smooth the cross section of the nails to avoid scratching the owner.