Why Rodents Can’t Throw Up, In Case You Were Wondering


Oddly enough, rodents can’t throw up, and now scientists have discovered why. LiveScience explains the findings of a group of neuroscientists from the University of Pittsburgh Cancer Institute. They found that rodents have bodily constraints that would limit how much they could vomit, even if they could attempt it. This includes reduced muscularity of the diaphragm — the thin sheet of muscle underneath the lungs — as well as a stomach that's not structured well for moving contents up the throat. They also lack the brain circuits for throwing up. Rodent responses to taste may make them better at avoiding toxins that can sicken or kill them. They also eat clay when sick, which apparently can latch onto dangerous materials and keep their bodies from absorbing them.