Can someone please tell me what is the typical age that female Maltese begin their menstrual cycles or their first heat? I ask because I noticed that Dini has been licking her private area a lot lately (which I thought was just her way of cleaning down there, even though I bathe her about every 4-7 days) but my brother in law mentioned to me that it could also be a sign that she will be in heat or at least starting soon. I didn't know that could happen at such a young age. She's not quite 5 months old and we don't plan to spay her till she's at least 6 months. I was hoping that we would be able to avoid having her doggie period altogether! Can anyone please shed some light on this? That way too I know at least that if it is something completely out of the norm, I can go take her to the vet and get a consultation for this. Thank you!!!