Updated on: 6/1/2018For adults, the dog bite statute of limitations in Washington State is three years from the date of the dog bite injury. This means the claim must be settled or filed in court within three years. But for children, this three year period does not begin to run until a minor child turns 18. Thus, a child will usually have until his or her 21st birthday to settle the dog bite claim or file a lawsuit in court. Usually however, a young child’s claim should be resolved well before that child turns 21 year old.