Aggressive baby?

Britney
My baby is 6.5months old and she lately has been so aggressive. She hits, pinches, and bites so hard that she shakes and growls a little bit. She rolls her eyes and flinches towards people she doesn't like as if she's going to fight them.
She's a smiley happy baby and doesn't cry much. She just has attitude but the aggression is starting to worry me.
Both me and her dad are aggressive but we aren't towards eachother and we don't show her any of that behavior. She is around a clean and good environment so Idk why she is acting this way. Any ideas?