Atomic Betty python weighs in at 140kg IT took seven people half an hour to wrangle 140-kilogram Betty onto the scales. But after her intake last year of four 25kg goats, plus rabbits and ducks, the reticulated python's handlers were somewhat surprised she had only gained an extra kilogram. Atomic Betty was caught by staff at the Australian Reptile Park in Gosford on Friday morning for her annual weigh-in. "She only put on a kilo from last year," Australian Reptile Park manager Tim Faulkner told AAP. At 6.5 metres long with razor sharp, one-centimetre-long teeth and a "defensively aggressive" personality, her seven weightwatchers didn't have the easiest time assessing her bulk. "If someone walks too close to her, she will lunge with all her might at them," Mr Faulkner said. Apart from being a little cranky at the forced weigh-in and having a lump on her back, 15-year-old Atomic Betty is in good health. "She's a snake in the prime of her life," Mr Faulkner said. The reticulated python is native to southeast Asia, and while non-venomous, it's one of only two species capable of swallowing a man whole. Atomic Betty probably won't grow much longer, but she's expected to live for another 10 to 15 years, during which time she will bulk out.