My name is Mr. Peepers and I am six months old today! Last week my human brought a baby sister home and yesterday when we were playing my new litle sister caught me laying down and she started trying to nurse! It doesn't bother me that she's doing it. I don't mind. In fact, while she's 'nursing' I give her a bath. I just want to know why my little sister is trying to do this. Could someone please tell me?