I have 1.1 hogg island x Columbian. I don't know what the percentage is (for sure) but i was lead to believe that it was literally a hogg island bred to a Columbian. I got them from a USARK charity auction at the 2011 Sacramento reptile show. I couldn't let them sell at $20 each, so I bid $25 and got them. Absolutely awesome temperament, beautiful color/pattern and great eaters. Not sure how big they will get, but around my house it doesn't matter.