I know puppies go through fear periods, but what are the chances a 14-month-old would still be going through them? Keegan's always been vocal, but the past couple of days his barking has reached a WHOLE NEW level. Today he was barking at the MICROWAVE. Which he sees me use EVERYDAY. Or maybe he's just a crazy adolescent? I can't really think of anything else that's changed lately - exercise, training, etc. - that might possibly cause him to bark at EVERYTHING. Any thoughts?