Toddler aggression towards newborn, how did you deal with it?

[Party-of-five]

When DD2 was newborn she copped a few whacks from DD1 the only thing I could do was distraction...nothing else worked. It did pass and now DD1 is nice and loving to DD2 but we still have the occasional issue.
DH also make the effort now with DD2 so I can have some one on one time with DD1 which helps her behavour heaps.
Dont ever feel you have failed him you gave him a little brother and one day im sure they will be the best of friends

[SammyRo]

Its hard isn't it, I had the same feelings about failing DD when DS was born - I know I've mentioned before how aggresive DD has been in the past (and it still rears its head on occasion - i've a funny story about the wiggles and biting I'll tell you next time I see you).
I found that if DD hit DS, then I would ignore what she just did and pick DS up to comfort him. I'd then distract DD by getting a book and saying lets read this or something to play with. She used to lie down on the couch whilst I was feeding and kick both DS and me, so I would just move to another chair.
When DS was unsettled, I'd walk up and down the hallway holding DS, or outside, and we'd do 'little steps, big steps, running steps' and all sorts of other stuff - this would keep DD amused for ages and because I was moving and jiggling DS, he'd be happy too. At other times, DS would sit on my lap whilst I played with DD on the floor or did colouring. WIggles and ABC2 got a workout at feed times too.
I do agree with Snacks though, DD can get the best laughs from DS and he constantly follows her with his eyes to see what she is doing. He also cracks up laughing when she's having a tantrum!
It does get better, I promise!