A mobility assistance dog is a service dog trained to assist a physically disabled person. Among other tasks, they are commonly trained to pick up objects, open and close doors, and operate light switches. Some larger-statured dogs are trained to pull individuals in wheelchairs, and wear a type of harness specifically designed for pulling.
Another type of mobility assistance dog task is that of a "walker dog". They are commonly used for Parkinson's patients, along with post-injury recovering and other disorders and conditions. These "living canes" can greatly assist a person with their gait and balance while walking. Also, if their handler falls, the dog may be trained to act as a brace to help regain position.
As with other types of assistance dogs, in many countries disabled individuals have the right to bring their mobility assistance dogs with them into places where animals are generally not allowed, such as public transportation, restaurants, and hotels. In the United States, the Americans with Disabilities Act is the law guaranteeing this opportunity to disabled individuals. If access is denied to a disabled individual, federal and some state laws have heavy penalties that may be brought against the business denying access.
In the UK, assistance dogs are trained and supported by charitable organisations; one such training mobility assistance dogs is Dogs for the Disabled.