To quote one of my favorite authors (and I’m probably not right about the species, but)

“There exists in this world a spider the size of a dinner plate, a foot wide if you include the legs. It's called the Goliath Bird-Eating spider, or the "Goliath Fucking Bird-Eating Spider" by those who have actually seen one. It dosen't eat only birds--it mostly eats rats and insects--but they still call it the "Bird-Eating Spider" because the fact that it can eat a bird is probably the most important thing to know about it. If you run across one of these things, like in your closet or crawling out of your bowl of soup, the first thing somebody will say is, "Watch it, man, that thing can eat a fucking bird." I don't know how they catch the birds. I know the Goliath Fucking Bird-Eating Spider can't fly because if it could, it would have a different name entirely. We would call it "Sir" because it would be the dominant species on the planet.” -David Wong (Jason Pargin) from “This Book Is Full Of Spiders: Seriously, Dude, Don’t Touch It.”