Bisonburg is the fourth area encountered in Steak and Jake . Its local baddie is Busyburg. Its name comes from Bison, a type of cow (like Steak), and Burg, a suffix usually associated with cities.
Bisonburg has a city landscape so it makes sense. Bisonburg is first seen on Trailhead 7 . This is where you encounter your first Milk Race . It has no challenges, but a milk race as the text says.