This is a weird question but Piper and Willow will smell Aspens mouth alot. By alot, I don't mean constant but often enough it's pretty noticable. I never catch Piper or Willow smelling each other's mouth...just Aspen. I can't help but think they detect something in her. I remember reading about how they have dogs sniff out possible cancer victims and how they can detect cancer way earlier than any machine. This may be paranoid of me but I can't help wonder if they are detecting something "off" with her. Any thoughts on this?

I really don't know, but Asia sniffs Kody's mouth a lot too. Tries to lick IN his mouth too!

I wouldn't think it's anything to worry about. Most of the cancer dogs I've read about need to be conditioned to detect it. Mine sniff each other too , probably more to see what they had to eat or leftover food particles.

I wouldn't think it so weird if I caught Willow and Piper smelling each other mouths but it is only Aspen. Maybe she just has bad breath.

My lab smells Balon's mouth all the time, who knows why? I feel like she thinks he is getting something to eat she isn't getting lol

Have you checked her teeth for any decay, or had the vet check them out?
Does sound weird though, I agree with you, It would be different if they were all smelling each others mouths.

Adobo here is the bad breath one and she is always licking the inside of Biko's mouth. He is almost 3 yrs old and still has sweet puppy breath.

LOL! Willow used to clean Dakota's teeth after he ate his meal. He would keep his mout open for her everytime! Aspen is going to the vet on Saturday so I will mention it but Im sure I am just being paranoid.