There's plenty of things to love about cats, and purring is definitely one of them. Cat owners can always tell when their pet is happy from their low, contented hums. But do any other animals purr?
The answer depends on how exactly you define "purr," said Jonathan Losos, a professor of biology at Washington University in St. Louis and author of "The Cat's Meow: How Cats Evolved from the Savanna to Your Sofa" (Viking, 2023)
