Don't feral cats and dogs also pose a threat to ecosystems? Yes. Cats in particular are a disaster. Ecologists have been trying to figure out how to effectivel

Don't feral cats and dogs also pose a threat to ecosystems? Yes. Cats in particular are a disaster. Ecologists have been trying to figure out how to effectively control feral populations and convince people to stop letting domestic cats outdoors for decades. "It's already a disaster so what's the harm in making it a whole lot worse" is not the most compelling argument.