I bought a peruvian / columbian cross and its agressive in an out of cage. Is this typical for the peruvian line as all my columbians are greaaaat snakes.I've been trying to handle alot ( at least 30 min to a hour per day sometimes more but its a struggle) but no changes and its getting old. He just will not calm down and will bite if he has the chance.I really do not want him to be a no touch snake , but I've been working with him about 6 mths now an no change. I was going to breed back to another columbian but I do not want to till I can tame him down. Any ideas ? Thanks