My sisters son is 2 in feb and has taken to hitting my DS, just turned 5.
My DS just takes it, saying auw, every time a blow is hit (its repetitive blows) but does nothing to retaliate because his cousin is only small.
When DS shouts, they have just started to remove his cousin but he comes straight back in to repeat the process. After about 3 goes, they give up and tell DS that he is obviously upsetting him, give him what ever it is he wants.
Today I came home after 3 days away attending a course, to discover that his cousin has actually drawn blood.
DD and DS tell me that it is because DC tried to pick DS up and his nails were too long so he cut into my DS shoulder.
That's ok, I guess, but also understandably upsetting. It was hard enough to leave them so long.
But then DD tells me that my sister told them that blood was good, it would heal faster that way 
I am just getting a little tired of it.
Both DS and I are told not to over react, that it is just because he is so young and doesn't understand. Though he understand well enough to say sorry and bad.
Both my sis and mum dismiss it all as being his age.
But it is very frustrating that DS is just expected to put up and accept it,then blamed somehow for it.
They, I feel, are turning my DS into a victim and DCinto a bully.
What could this mean to my DS childhood.
It's also a worry because my sis is expecting her second, in Feb.
Surely she should be a bit worried about what he DS is going/capable of doing to the newborn.
All under the title of 'just being a boy'
My 'boy' has never hit like this.
I know all children are different and boys can be boisterous but what canI do to stop my DS taking the brunt :(