Most mortality in yellow anacondas occurs as young, when they are smaller and vulnerable to predation. Once they reach adult sizes, yellow anacondas have few natural predators. The typical lifespan for yellow anacondas in the wild is from 15 to 20 years. In captivity yellow anacondas can live up to 23 years. Humans greatly influence the lifespan of yellow anacondas in the wild, as poaching has decreased the number of yellow anacondas to a dangerously unstable level. (Leen, 1978; Simon, 1992)
- Simon, S. 1992. Snakes. 1992: HarperCollins Publishers.
- Leen, N. 1978. Snakes. New York: Holt, Rinehart and Winston.