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 terryfying creature! Then I considered that perhaps a fly could have existed like that but it quickly may have say killed all of it's food sources gone extinct. Are there any known examples like this in animals or insects?