Both my kids were the very same.
My eldest started it at almost a year old, between 10 and 12 months anyway, but my younges- 6 months, I kid you not, I took the remote controll off her and she went ballistic, I thought surely she'd not going to start this already.
She did.
She's 16 months now, and has been all sunshine and chubby light the whole time- take something off her though, and it's WAR.
We try to ignore it, when she was smaller, we had too leave the room, 'cos it was so funny to see w=somebody so small getting so furious.
Didn't really help, but Meh.
Now she holds onto your pants if you try to walk away-with her little fat hands, and she's even bitten me a couple of times (although, I think she was teething and it was more a two birds with one stone affair)
Just ignore, give them a dissappointed look, sigh, move on.
The really understand body language.
they may not Care, but they understand!!!!!