Yes, at times, the dog collar can hurt the dog’s neck. Some common issues that result from dog collars include thyroid damage, ear and eye damage, or neck injuries and bruises. The common reason for such a problem is low-quality material, torn belts, or the collar is too tight to the skin. This is the reason why it important is to use a soft, high-quality collar for your dog. Plus, the fit of the collar should be comfortable to avoid any superficial or inner issues.