Why are boys like this?

Mine pulls my hair so hard, like his life depends on it! Its a game to him, he finds it hilarious

It’s the other way around with my babies I have a three year old little girl and she’s quite violent at times where as my 1 year old boy is the complete opposite it’s hard not to take it personally but at that age not being able to fully communicate or comprehend your own emotions is frustrating to such a little person I personally walk away and ignore and then if that doesn’t work and she continues she gets put in her room for 5 mins then I’ll go up and explain why I put her in there as long as it’s a safe space to be in by themselves there’s nothing wrong with setting yourself and them some boundaries but it also is important to try see where the outbursts are coming from what triggers them and what doesn’t and if possible avoid that situation for both parties being upset