Teeth So soon?

Why on earth would a 4 month old get teeth? Last sunday we were sitting in Relief Society at church and Melissa was holding Ella. A few minutes in she turns to me and says, "Ouch, did you know Ella has teeth?" I sure didn't. I had checked a few days earlier to see and couldn't find anything. Well, yes she now has her two bottom teeth and knows how to use them. Pray we can teach her not to bit so we don't have to go strictly to the bottle! Kenna didn't get her first tooth until 8 months! It's amazing how different the two girls we have are but they are both loved the same. They are so sweet and innocent even when they are bein little stinkers!