Thanks for all the advice everyone! Tobi is one week shy of being 4 months. He already knows how to sit and lie down...but the "stay" bit isn't working just yet. We've signed him up for obedience classes and hopefully that will work. And I'll definately try the taking the food away after 15 minutes...I usually just leave it there b/c I'm worried he'll become hypoglycemic(sp?) if he misses his meal.
And what exactly did the "dog whisperer" do/say? I'm DEFINATELY interested if it worked so well for you!
Tobi's aggression has calmed down lately..so..hopefully it was just a phase. Thanks again everyone!