i have heared recently that boa's (don't know what type) will only grow as big as the space they are in e.g in a small tank it will stay smaal in a big tank it will get big... this don't sound right to me..
thats a load of sh*t!! Dont believe everything you hear!! lol I would suggest that the minimum requirements for most snakes would be a viv about 2/3rds - 3/4s of the snakes lenght, however i like to have a viv thats at least the same length of the snake if not longer, though may have to reconsider that when my boas get 8ft+ lol
You can stunt a boas growth to a certain extent... basically feed them once a week until they reach 6, 7, 8ft then reduce the prey item down to once every 2/3 weeks and they won't get much bigger.... as for little box little snake, thats total crap!
Basic i.e. min requirements for a boa is 1 sq ft of floor space to every ft of boa... That is what I would call a min requirement though, obviously more is better