The "terribles" hit when?

I had envisioned that I wouldn't experience the case of the "terrible twos" until Alexander hit the age of 3. I envisioned this due to seeing/watching my niece Kianna go through the "terribles" at the age of 3. 2 was a piece of cake, 3 on the other hand not so much. Hoping this would happen with Alexander I was wrong. Alexander's "terrible" stage hit after his baby sister Ava was born. Us parents put up with so much! Please tell me they grow out of this "terrible" stage! Between all the pinching, biting, scratching, hitting, pulling hair and shouting what's next?! We're trying to teach him not to do those things, but how much of it actually goes in? I know there are those of you who just can't see Alexander being this way, but trust me he has his violent side and some of you have witnessed this side. So my vision of the "terribles" remains to be true as "the terrible twos!"