CB is captive born. This technically means that a seller can market the animal as CB which is essentially a CH baby because it was hatched(born) in captivity. Because alot of people may think CB is captive breed, some 'tricky' importers will label them as CB instead of CH in order to trick people into puchasing a CH baby. CBB is a captive born and breed animal...both of the parents were breed in captivity. Personally, I think the term CB should not be used at all because it leaves something open for interpretation. I use CH, WC, and CBB.