2yo bullying 5yo sister - help!

[completelyshotpelvicfloor]

My DS (2) has hit, bitten, kicked, slapped and pulled the hair of his sister (5) and it's driving me mad! He goes to pre nursery two mornings a week and there have been no reports of problems. I am so worried about what it is doing to her - he bit her today and broke the skin - need some advice.

DS is stubborn and opinionated but can be reasoned with on other subjects (eg teeth cleaning etc) but the minute his sister is home from school he is glad to see her and then attacks her.

I have done the "ground rules" and shaken for a "deal" - no difference. I have done the "not nice, say sorry". I have done the "making sister sad". I have done the thinking step. I have taken away toys. I have done the reward chart.

I am consistent, fair but now worried. Any suggestions gratefully received.

i know it sounds completely awful, but have you tried to do the same back to him ie. biting, try biting him back obviosly not with force but let him know it does physically hurt.
he obviously is not grasping that what he is doing is hurting his sister?
failing that perhaps you should try talking to your local health visitor, or gp, perhaps they could give you some ideas, or methods to use. i hope you get this sorted. x

Biting them back or hitting them back isn't usually recommended. You're doing all the right things, unfortunately they can take a while to sink in! Keep up with the thinking step about how sad it makes his sister - you will get there!

Sounds like you are doing the right things, just keep going. I had a similar situation, maybe not quite as bad, with my 2 ds's. Ds2 is just 3 and has started to get a lot better and is easier to discipline as he gets older. The sad part in our case is that ds1, who never used to retaliate, has started kicking ds2, but I guess that's normal.