Calypso, an emotional support cat, sleeps next to Sidd Todd as she does schoolwork. Todd said Calypso provides comfort during stressful situations, including test-taking and periods of depression.

Add Yahoo as a preferred source to see more of our stories on Google. NORTHAMPTON — Ruby O’Dair walks into her dorm room, where posters of Korean pop artists decorate the walls. Her cat, Pepito, runs ...