Puppy whistle, how does it function?Get an easy, effective Dog Training solution for him...now. Free training Course for Dogs TrainPetDog.com
A doggy whistle (also known as silent whistle or Galton’s whistle) is a sort of whistle that emits seem in the ultrasonic vary, which folks simply cannot hear but some other animals can, which include canine and domestic cats, and is employed in their education.
Information accredited below Creative Commons Attribution. Supply: Wikipedia.org