Autism service dog

An autism service dog is a service dog trained to assist an autistic person to help them gain independence and the ability to perform activities of daily living similar to anyone else. For the most part, these dogs are trained to perform tasks similar to those of service dogs for other sensory processing disorders.

As with hearing dogs for the deaf, the dogs may be trained to alert their handler to important noises or other things requiring human intervention, such as smoke or a smoke alarm, a crying baby, a telephone ringing, or a knock at the door. For an autistic person, it may not be immediately obvious which of the many external stimuli is the urgent one requiring their immediate attention. An autistic person may have to sort through both major and minor stimuli—the sound of crickets, the smell of the fabric softener on their clothes, a car driving past outside—to determine which of these, if any, needs their attention. They may understand that a smoke alarm is urgent and requires them to exit the building, but it might take more time to realize the alarm is sounding in the first place.

How service dogs are trained to respond to certain behaviors:

...
Wikipedia