Piper is 5.5 months old today. I’m not planning on spaying her until after her first heat, but i’m wondering WHEN female havanese puppies typically start going into heat. I guess i’m afraid of somehow missing the signs? Is it possible to not notice? Once she hits 6 months in a couple weeks should i stop taking her to play at the small dog park? Will i have to be on high alert during walks from 6 months on or will it be obvious when she enters heat (and then i can just sequester her for the time period of her cycle)?