Boiga forsteni — Forsten’s Cat Snake
This is the biggest of the five Boiga species in Sri Lanka. This one demonstrated their habit of tightly coiling up when confronted, looking quite vicious. They are mildly venomous, but not known to cause problems for humans. We made sure it didn't cause a problem for us by staying far enough away.
- de Silva, A., Ukuwela, K. 2017. A Naturalist's Guide to the Reptiles of Sri Lanka