Ok I have been pondering this for a few months now. There is a man in the Michigan Society of Herpetology who has a green anaconda who is dwarf in size (no more then 5’ long full grown). I was told it was a dwarf green anaconda. How does the dwarf gene work? Is it something that is recessive and has to join with another recessive to make the animal a dwarf? I know this is how it works with rabbits, when they get the double dwarf gene and all their features are dwarfed. In the rabbit world these animals usually don’t live do to other internal birth defects.