Have you ever wondered why your cat will slowly walk up to your face as she they are sniffing your breath? Well, turns out they are. I have long wondered why when I was laying down I would catch my cat putting her face to my mouth as if she wanted to sniff my breath and so I began looking into it. And as it turns out what my cat does it rather common. Cats are my nature curious and if she smells something on your breath she wants to take a closer look and find out what that smell is.