I dont know about birds, but cats definately can. Many animals with good hearing can hear it. Humans have very poor hearing, when compared to most other animals. Humans can only hear noises that are at least 20000 hz, while dog whistles operate in the 16000 to 20000hz range.
Articles Tagged: Whistles
i have a golden retriever puppy about 8 weeks old and she bites and growls… a lot. she was the biggest of a litter of 12 and i was wandering if a dog whistle is effective way of training a dog. if so please say were i can get one.