swamp cancer - Robuta Search

https://www.yourdictionary.com/swamp-cancer

Swamp Cancer definition: Pythiosis.

https://www.fox26houston.com/news/woman-warns-rare-swamp-cancer-killed-her-dog

Jan White's animals are her world. She has horses, a miniature donkey, and two Great Pyrenees.

https://www.tvinsider.com/1239224/swamp-people-what-happened-troy-landry-legal-issues-cancer/

Plus, the recent deaths he's mourned.