Key TakeawaysPetco announced the hiring of Joel Anderson as CEO late Wednesday afternoon, a move analysts called a "key step in the company's revitalization."Anderson will join from discount retailer Five Below, shares of which fell on the news.Petco shares moved higher Thursday. Petco (WOOF) shares rose Thursday after the pet retailer named Joel Anderson its new chief executive officer. The announcement landed hours after discount retailer Five Below (FIVE) yesterday said Anderson was departing. The news c ...