My name is Zora, hear me growl

Zora's new thing is "growling." She does it all the time. (During communion, at the "Y" nursery while I work out, if I don't feed her cereal fast enough, ...) I turned on the camera & said, "make her growl" & this is what we got. :)
**I kept wondering, "where is she getting that?" until one night recently when my eldest growled at me for not doing what he wanted when he wanted (he was punished for it), but I then realized from whence the growl emerged.