I asked this on another forum but I am dubious as to whether I'll get a reply there, so I thought I'd post it here as well. Since I'm pretty new here a bit of an intro; I'm familiar with ball pythons and have a very mellow one who has only bit me once (and that was my fault; I accidentally surprised him while he was getting ready for a shed). I've kept all sorts of other animals over the years, but never a boa. Yesterday I got a new Brazilian rainbow boa; he's full grown, about 5 years old and very beautiful. That's not the problem. The problem is that I tried handling him for the first time tonight and ended up getting bit repeatedly. So my question, essentially, is this; can an aggressive BRB be trained to be less nippy at this advanced age? I do not believe that the previous owner held mine much at all, except perhaps with a hook to take him out and feed him. When they went to place him into my transport container they grasped him behind the head, which I thought was odd unless one is worried about getting bit, but when I got him home I put him into his new tank by hand and he was really quite mellow so I thought little of it. However, as I stated above, I ran into problems when I attempted to handle him to give him a more thorough looking-over for the first time tonight. I was careful not to startle him and let him know I was there, but he bit me anyway on the palm of my left hand, drawing a small amount of blood. Not one to give up so easily, I told him, "Now that's not going to get you anywhere." (Yes, I speak fluent Parseltongue.) So I picked him up and placed him on my lap, and he struck again (again on my left hand, as he was coiled and grasping onto my right hand at this point.) This time he drew quite a bit more blood. I didn't want to put him back right after this and teach him that biting = no more hand, so I kept him on my lap- but he kept moving up towards my face. I was not eager to get bit on the face, so I adjusted the position of my left hand to gently pull him back away from my face and twice more he got me on the same hand, each time the bites came as I moved my hand to adjust my handle on him. The fifth time he struck at me I reflexively moved my hand out of the way. I managed to handle him for a good ten minutes or so despite all of this, and then I put him back in his container and cleaned up the blood/scrubbed with alcohol. I know that BRBs tend to be nippy at first, but from what I've read they usually get over that if they are handled enough; however, I've only ever read this as it applies to babies. Can a 5 year old adult be trained not to bite by simply handling him more often? What about wearing gardening gloves for a while so that he can bite to his heart's content? Or, will he simply learn not to bite the glove, and still strike the hand once the gloves come off? Or is he likely too set in his ways to change at this age? Also, do BRBs have two rows of teeth? Because one of the bites has two rows of tooth marks, so it's either that, or he bit me twice in the same spot so quickly so that I thought it was just one bite. Stats on his enclosure; 40 gallon breeder mixed coconut fiber/cypress mulch bedding nicely sized hide seems custom made; he has spent every moment in it since I got him yesterday. big water container humidity fluctuates between 85%-99% temperature from 76F to 81F Thanks in advance.