Though only 6 months old, Amy likely is the smartest pupil in her dog-obedience class. She only has to be instructed a couple of times before learning something new. “Amy will work for lettuce.

You can’t teach a old dog new tricks, but you can teach a pig all kinds of canine moves. Amy the six-month-old pig is quickly becoming the top dog in her obedience class full of pooches, reports The ...