This story is from The Pulse, a weekly health and science podcast. Find it on Apple Podcasts, Spotify, or wherever you get your podcasts. Stella, 4, is smart, funny and has a lot of energy. Her verbal ...

From feisty kittens to pacing cheetahs, Vint Virga knows animal behavior. A veterinarian who specializes in behavioral medicine, Virga has treated many household pets in his clinic. But for the past ...