My 9 mth old acts like a monster?

Is this normal? It kind of scares me..cause I hate scary movies/ghosts/monsters stuff. This sounds pretty funny and ridiculous I'm sure...but it freaks me out!!! My own baby reminds me of Chuckie or something!....She's adorable don't get me wrong..but when we're on the couch or on the bed...she can barely crawl...but she gets on her knees and lunges forward towards me.....while growling..and clawing me....all this is sooo quick its like super zombie speed mode. She laughs hysterically ..growls like a zombie...and starts grabbing and clawing me. Where did she learn this? geez..she's strong too when I try to get away...she just clings onto me or drags me down. She's got superhuman baby strength!? Anyone experience this? As crazy as this sounds...I'm serious!!!