At 12:13 am Friday, East Contra Costa Fire Protection District responded to a report of a motorcyclist down in the 2200 block of Taylor Road on Bethel Island.
Engine 53 arrived on scene and located a 53-year-old motorcyclist down in the street suffering from neck and back injuries.
The call came in as a motorcyclist vs. pedestrian; however, Battalion Chief 5 said this was a motorcyclist versus dog.
According to Battalion Chief 5, the driver hit a dog which caused them to crash. The motorcyclist was in and out of consciousness. Animal control was needed for the dog.
CHP is currently investigating the crash.