Aptly known as the puff-faced water snake, Homalopsis buccata is a mildy venomous water snake native to Southest Asia, primarily Indonesia and some parts of Malaysia and Thailand. This particular individual is bigger than is usual for this species, because it was caught in a fish pond, where it evidently stuffed itself with all the fish it could snap up.
License & Attribution
By Joaquim Baeta. The files associated with this video are licensed under a Creative Commons Attribution 4.0 International license. You are free to distribute, remix, adapt, and build upon them in any medium or format, even for commercial purposes, provided you give appropriate credit to Joaquim Baeta.
Example attribution: "Homalopsis buccata" by Joaquim Baeta, CC BY, https://scenoptica.com/footage/homalopsis-buccata.html.