So I was looking up anacondas on Wikipedia and found this. i knew wiki was bad but this? "There have been very few instances of anacondas being bred in captivity. In October 2007, the New England Aquarium in Boston achieved a breakthrough when it was discovered that one of the aquarium's female anacondas was gravid with a brood of eggs." I'm pretty sure they are bred fairly often in captivity and um....... "was gravid with a brood of eggs" ya anacondas are viviparous. Just goes to show you can't trust wiki.