What kind of breed is bow wow from Maniac Magee?

In the book "Maniac Magee" by Jerry Spinelli, Bow Wow is described as a "half-and-half," which means he is a mixed breed dog. The specific breeds that make up Bow Wow's heritage are not explicitly stated in the text. Mixed breed dogs can have a combination of traits from different breeds, making them unique and often unpredictable in terms of appearance and behavior.