Dingoes at Dinnertime is the twentieth installment to the Magic Tree House series. The book is preceded by Tigers at Twilight and succeded Civil War on Sunday. Its revealed that the dog Jack and Annie have been helping, Teddy is actually a young boy who is training to be a sorcerer and accidentally changed himself into a dog. Morgan felt the boy needed to learn certain lessons before she would change him back which is why she sent them on the journeys with them. The boy, who tells Jack and Annie to call him Ted though they only do for the end of this book, later becomes a recurring character in the later books and one of their best friends and allies along with his selkie friend Kathleen.