SCIENCE

Mammals Pee Pretty Much The Same: Why It Matters

Virtually all mammals take about 21 seconds to pee—and the implications for drainpipe engineering are surprising

Oct 01, 2015 at 11:58 AM ET

Elephant bladders can hold roughly 3,600 times the volume of a humble cat bladder, but researchers have found that both mammals take about 21 seconds to relieve themselves. The scientists behind this discovery recently nabbed an Ig Nobel Prize for, “achievements that first make people laugh, and then make them think”, but the implications of their findings are no laughing matter. Here’s how knowing how fast mammals pee could change the waterworks of your city: