i have a Yellow Anaconda... they can be very agressive at times. A VERY important thing when trying to tame a snake is to not let them learn that if they strike they will be left alone. Anytime he strikes at you, hold him with one hand on the center of his body and hold him with your other hand closer to his head... his neck i guess? hold him tight(obviously dont strangle him) that way he cant strike at you again. hold him there until he calms down and then slowly let him go and hold him a while longer before you put him back in his setup. That is what i have to do with my girl when she gets agressive. Good Luck!