So, for your enjoyment, we’ve gathered the most terrifying, strange, and otherworldly critters on the planet. From nocturnal sloths with panic-inducing talons to a little alarming fella called the promachoteuthis sulcus, these are the animals that will make you check under the bed a second (and third, and fourth) time tonight. (Oh, and you’ll also find a few cuties throughout—to help ease the nightmares.) And for more on the most fear-inducing species in the world, check out these 12 Most Deadly Animals on Earth.