I saw a pic once with a HUGE Anaconda with a small Ball python.. but the man I knew was only joking when he put those two together. They were one big mass of snakes... well 98% was the Anaconda. only the small head of the ball python could be seen through the coils of the big baby. The Bp wasnt at all small when you help it though. She was HUGE for a Bp I guess. I'd guess she was close to 6ft and almost 15 yrs of age. And the guy only put the two together when there was a HUGE arguement over keeping different snake species together.. he didnt help the dispute at all... but I wouldnt even attempt to house snakes of different species or even of the same species together... too many problems and other complications happens.