well i think it can be many things... we'll start with the least serious and work our way up.. lol.. she might have an ear infection or allergies... i also read that can be a symptom of a liver shunt... NO idea how those two things relate but that's what i have read on here.. might want to get her checked out for an ear infection.. i hear if you let those go too long it can cost a lot of money to get them better. hope that is all it is