The Hidden Problem of Outdoor Cats: Ecology of Fear
As a huge cat lover who grew up with cats and adores every part of them, outdoor cats are a problem. You’ve probably already heard this, but domestic outdoor cats are responsible for a staggering number of extinctions in local bird populations, even if someone thinks their “sweet little baby would never hunt” because the cat definitely has. But that’s old news, and I’m here to present another (probably already done) theory on why these cats cause problems, and that is a concept called “The ecology of fear.”
Ecology of Fear is a semi-recent concept coined by ecologists that talks about the indirect impact predators have on prey species. Basically, besides directly influencing prey populations by killing prey, there is a broader impact caused by just the presence of a predator that causes defensive changes in behavior. This change usually involves being much more cautious, meaning there’s more energy devoted to being alert and weary and less energy spent on growth and reproduction. There’s also less food consumed because the prey cannot spent large amounts of time in the open. So what does this mean for cats?
It means that even if your cat has less than one brain cell and doesn’t know how to hunt and is scared of grass like mine is, it doesn’t matter. Just the existence of a cat in the area causes local animals to chance their behavior, often with negative impacts for themselves. Birds and other prey species already have to deal with natural local predators, and adding the pressure of cats into the system tips the natural balance too far against the prey.
So please keep your cats indoors, both for their safety and the safety of local animals.
Sincerely,
An aspiring ecologist
(Also: if you’re interested in more details on the ecology of fear, a good documentary to watch is “Nature’s Fear Factor” on PBS. It’s about the reintroduction of wild dogs to Gorongosa Natural Park)