[Sciencewoman]

CG, I have a veterinary question for you. I read somewhere that one of the reasons dogs sniff each other's butts in greeting is that they're assessing each other's health and can pick up scents that indicate the other dog may be unhealthy and they should stay away. Is there any truth to this? I'm asking because Pippin has this funny behavior of running into a bathroom whenever he hears the toilet flush and sniffing the toilet for a couple seconds. Then he leaves. I'm trying to figure out if he's curious or attempting to assess our health, lol. He's such a character.