Ratbane (“the poison that keep on killing”)
This poison is so strong that it only takes 1 minute after ingestion to kill a mammal.
In 2004, this poison attracted attention when it was used by a mysterious serial killer to wipe out scores of animals at the São Paulo zoo.
Y‘all, I had never heard of this case before and I looked up some articles on it and it is absolutely wild. From what I can gather, they never captured who did it. #deadlyplants