The vomiting reflex takes place in many mammals, including primates and carnivores, but mice and rats in the laboratory appear to lack this response. A team of neurobiologists at the University of Pittsburgh decided to study why this is.

Do rodents have gag reflexes?

The unfortunate creatures in question are all rodents. That's right: Rats can't hurl. Don't envy them their good fortune. Your gift of gag means you can expel gross or harmful things from your heaving guts.

Can a mouse throw up?

Vomiting isn't universal in the animal kingdom, however. Rodents can't vomit at all. That's right: Squirrels, mice, rats, gophers, beavers and all other rodents are incapable of throwing up.