lol, yep its normal! My daughter starting throwing mean tanties at about 8 or 9 months, full on screaming, bright red face with her arms banging at her sides! She is a little minx my girl lol, her nick name is minxy
Now that she is 13 months, when she doesnt get her way, or her brother takes something off her she screams and crys and attacks him

trys to get the toy back, or she lies on her tummy, screams and kicks her legs.
I just ignore her when she does it, as she always looks at me to see if Im watching.
She is worse than my son with the tanties, must be a girl things!