In Scientific American, Jack Tamisiea writes that Cats Kill a Staggering Number of Species across the World (‘Domestic cats are cherished human companions, but a new study shows the enormous breadth of species the felines prey on when they are left to roam freely’):
Despite their small stature and memeable mugs, domestic cats (Felis catus) are perfectly adapted killing machines, armed with retractable claws, sharp fangs and night vision. And these potent predators are anything but picky. As humans have spread cats around the world over the past 9,000 years, these ferocious felines—which were likely domesticated thousands of years ago in the Near East—have terrorized native creatures on every continent except Antarctica.
A team of researchers recently added up all the species on these invaders’ menu. In a paper published on Tuesday in Nature Communications, the team compiled a database of more than 2,000 species that have fallen victim to free-ranging domestic cats. Nearly 350 of these species are of conservation concern, and several are already extinct. “We don’t really know of any other mammal that eats this many different species,” says the study’s lead author Christopher Lepczyk, an ecologist at Auburn University. “It’s almost like an indiscriminate eater; they’re eating whatever’s available.”
Because of their cherished connection with humans, cats have become some of the most widespread animals on Earth. As pure carnivores who lack the ability to process plant material, household and feral cats are always on the prowl for prey to hunt or carrion to scavenge.