She probably hears a second heart beat, so she is smelling for the baby. Can't blame her for being so curious, since it is something new to her. Given a dog's sense of smell I wouldn't be surprised if she could smell something different about you.
Peggy -------Original Message------- From: JD Date: 8/14/2013 8:58:04 PM To: Chihuahuas@yahoogroups.com Subject: [Chihuahuas] can dogs smell pregnancy ok just curious or is Piper weird. She's super snuggly but she's also insistent on sniffing my belly and putting her head on my belly. I'm pregnant but not showing much. Just wondering if she smells the baby or pregnancy or something JD