Is there an example of any animals or insects that have evolved too efficiently and went extinct due to upsetting the homeostasis of their environment? Outside humans.
I was thinking about venomous snakes when a fruit fly landed on me while having a libation in my garden. Then I got to wondering about why, for instance, a fly that eats rotting flesh wouldn't develop a potent neurotoxin on its feet? What a terrifying creature! Then I considered that perhaps a fly could have existed like that but it may have quickly killed all of it's food sources, and, as a result, gone extinct. Are there any known examples like this in animals or insects?