So far, my biggest is my female bci, Lola, at right around 6 ft long, maybe 5 or 6 years old. I know she will be surpassed before too long by Dennis, the male albino Burmese python. He is just over a year (I think) and is almost that long already. I can't really get a good measurement of him, as he is still a bit aggressive from being so young and his previous situation. He is getting better every time I handle him though. I should expect him to top about 12' or so, right?