Got pets? Jon Katz does – four dogs, four donkeys, a cat, several chickens, a herd of sheep, and a giant steer named Elvis – although he considers some of them livestock. Katz, who frequently writes about his menagerie for the online magazine Slate, will be our guest this hour. His latest book about the goings-on his upstate New York farm, is “Dog Days: Dispatches from Bedlam Farm” (Villard, 2007). He appears in Fort Worth this evening.