Chicago Tribune (Nov. 9) -- Phil Blizzard's life has gone to the dogs. And while the saying goes necessity is the mother of invention, in Blizzard's case it was pet anxiety. Blizzard invented the ThunderShirt and founded ThunderWorks, which has grown since its start in 2009 to a multimillion-dollar business today. ThunderShirts are garments designed for dogs and cats, that apply pressure to their torsos in the hopes it produces a calming effect on them.