Shifting rainfall patterns can dry up the swamps necessary for their breeding and hunting.
Paradoxically, humans are a much greater threat to anacondas than the reverse. Habitat destruction, the exotic pet trade, and "fear-based" killings have seen their numbers decline in certain regions. Conclusion one girl one anaconda
While these stories showcase a unique bond, it is important to remember the nature of the green anaconda: Shifting rainfall patterns can dry up the swamps