The Appearance of the Temper Tantrum

Evelyn is almost 11 months old--doesn't that seem a little young for a tantrum? I tried to tell that to her, but she couldn't hear me over her screaming. She has started to let us know when she doesn't like our opinion about what she should and should not be playing with with a loud screech and fake cry when something is taken away from her. Little stinker.