L.C.
You can watch for situations that make him mad and try to prevent it, but the thing is if he is not talking in full sentences, that's what toddlers do since they can't communicate. If time outs work, just keep doing it so he can learn that it is not an acceptable behavior(and make sure you talk it through so he knows that YOU KNOW how he is felling"like I know it makes you mad that Sammy took the toy from you, but we do not hit ...and stuff like that). Our oldest went through this stage(he did not talk till he was 2 1/2) and it got a lot better after he could talk. Our youngest is 18 months and is doing the same thing, so we're just working through yet another stage.