Head butting baby

Does anyone else bubs headbutt everything?? My lo has just turned 9mo, she will crawl up to anything and just repeatedly headbutt it, follow you around heabutting you or when she’s sitting she does it backwards into her high chair, she’s hurt herself a couple of times and cried but mostly she just keeps doing it repeatedly until she gets bored I guess 🤷🏼‍♀️