One would think a dog that couldn't hear wouldn't be as apt to vocalize as much as a hearing dog. Unfortunately, this is not necessarily true! Dogs that are deaf may bark for a number of reasons, some the same as hearing dogs, some because of their hearing impairment. A deaf dog may bark out of increased anxiety or frustration due to their inability to hear. Even though deaf dogs cannot hear they can see, or come to associate certain activities like their owner approaching the door with someone arriving, and will bark in response to a person approaching, another dog passing by on the sidewalk, or a squirrel in a tree, the same as any other dog would. Most people train their dogs not to bark, or to stop barking, by giving verbal commands. Obviously, this will be ineffective with a deaf dog that is unable to respond to audible commands, so owners of deaf dogs need to find other ways to teach their dogs to stop barking.
Ensure you understand what triggers your dog to bark, so you can use these stimuli to teach your dog to stop barking. Have treats available to reward compliance and any equipment that you will use to get your dog’s attention and communicate the 'stop barking' command, such as a light source or vibrating collar. You may employ an assistant to create situations in which your dog begins barking. You will need to conduct training over several weeks, as situations in which your deaf dog barks arise and provide the opportunity for training, so you will need to have treats and tools for signaling your dog readily available and on hand at all times in order to maintain consistency.