Pet trackers are generally considered safe for pets. The devices are designed to be lightweight and comfortable for pets to wear, and they typically do not cause any harm or discomfort. However, it is important to choose a high-quality tracking device from a reputable manufacturer and to follow the manufacturer’s instructions for use. It is also important to regularly check the tracker’s fit to ensure that it is not too tight or too loose, as an ill-fitting device can cause discomfort or even injury to the pet.