Even though dogs and people have different tolerance levels for sound, you can understand their sensitivity by observing yours. If someone blows a whistle at a distance, you hear it, but it doesn’t hurt your ears. However, the noise can be downright painful if they blow the same whistle at full blast right next to you, especially for an extended period. The same is true for dogs as well. There are correct ways to blow training whistles, so read the instructions carefully before using them around dogs. Consult your veterinarian or a professional trainer if you are still uncertain.