Well, I could be off in my math, but I'm thinking a particularly long and fat female ball python could hit 8 or maybe even 9 lbs. Depending on who you ask, females are breedable at 800 grams, 1100 grams, or 1500 grams, which ranges from 1.76 to 3.3 lbs. Obviously those will be the low end of sexual maturity, but I'm having difficulty imagining their reaching 10 times that size. Anyone else want to jump in with an assessment here?