An assisstance dog calls 911 and saves his owner’s life last week in Scottsdale. A dispatcher with the Scottsdale Police Department took a call from an assistance dog who barked on the other end of the line. The dog was trained to call 911 whenever his owner lays down and is unresponsive. All the buttons on the phone are preprogrammed to dial 911. This isn’t the first time the dog has called 911.