It is an object to provide a useless barking preventing collar for preventing a dog from barking. A collar (C) to be attached to the neck of a dog is provided with a vibration unit (10) for carrying out a vibration when sensing the bark of the dog, and the vibration unit (10) is constituted by a control portion (20) including a sound sensor (21) for detecting the bark of the dog, a regulator (22) for outputting a sense signal when the volume of the bark detected by the sound sensor (21) is equal to or greater than a reference, and a switch (23), a vibration generating portion (30) for generating a vibration when inputting the sense signal, and a sound generating portion (40) for generating a sound when inputting the sense signal. When the dog barks, accordingly, the vibration unit (10) is vibrated so that the collar (C) is vibrated. Consequently, the vibration of the collar (C) is transmitted to the dog so that an unpleasant feeling can be given to the dog. Thus, it is possible to prevent the dog from barking.
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