Colombians on average are the largest BCI. I had a het albino female that was just under 9ft and about 40lbs. The Central American locales are smaller and the island and a couple Mexican locales are true dwarfs. There is also a dwarf Nicaraguan line. I, personally, love the Costa Rican and Panamanian boas. By the way I highly doubt a pet shop has a pure Colombian hypo. They are very uncommon. They are hardly ever listed on Kingsnake or Fauna Classifieds even.