Government shutdowns, drug wars (Hello, Cartels.) and disease outbreaks aren’t enough to shock America’s couch potatoes anymore. “America Now”, a news digest television program that makes NBC’s “Today Show” look like hard-hitting journalism, tries to up the ante with this bit of manufactured terror: Killer bees are going to kill your dogs. Killer bees do indeed kill pets, but so do European honey bees. And chocolate. And heartworms. And snakes. And other dogs.