So Nelson is a good-natured, sweet puppy. He seems timid most of the time, but lately he's been getting a bit aggressive in certain situations.
Last night he was playing with a chew-toy on his bed and his constant moving was steering him close to the stairs. I went to move the bed backwards so that I could gate off the stairs, and as soon as I grabbed the bed, he growled and tried to bite my hand.
I've only ever trained a shih-tzu (sp?) before this and all of his mannerisms were quite a bit different. I'm getting mixed reviews from others on how to handle this, and most of them seem to train their dogs by being more aggressive than I would ever be. For anyone who's experienced this, how did you correct the situation?