WHO: The cutest adult pygmy hippo you ever did see. WHAT: A new arrival at the Houston Zoo. WHY IT’S SO GREAT: One of the more wholesome global phenomena we’ve enjoyed over the past few months has been the emergence of Moo Deng, baby pygmy hippo and viral sensation. The playful, charismatic li’l beast is a native of eastern Thailand, where she lives at the Khao Kheow Open Zoo. She has a warm, friendly-looking face and adorable rolls along her neck, and she has helped introduce the very existence of the pygmy hippo—a species with only about 2,500 individuals left in the wild—to the wider world. She is a pure and good thing in these unusual times. And she can go straight to heck, because Texas has…