Humans like to pride themselves on their cleanliness compared to other animals, but it turns out, our 700-thread-count Egyptian cotton sheets aren’t as sparkling clean as we might think. A new study in Royal Society Open Science reveals that chimpanzees keep tidier beds, with lower counts of bacteria, reports Jason Bittel at National Geographic.

The filth of human homes and beds is surprisingly well studied. “We know that human homes are effectively their own ecosystems, and human beds often contain a subset of the taxa—or types—of organisms found in the home,” says lead author Megan Thoemmes of North Carolina State University in a press release. “For example, about 35 percent of bacteria in human beds stem from our own bodies, including fecal, oral and skin bacteria.”…