Hearing dog
Hearing dogs are a category of Assistance Dogs that are especially selected and trained to assist people who are deaf or hearing impaired.
Hearing Dogs assist their handlers become aware of important sounds such as doorbells, smoke alarms, passing traffic, a ringing telephone, or an alarm clock.
Hearing Dogs may be trained professionally in as little as three months. They are trained to recognize, then physically alert or lead their handler to the source of the sound. They are trained in basic obedience skills, and must be focused and non-aggressive.
Most Hearing Dogs wear a blaze orange leash and collar to identify them.