Fecalphiliac Dog?

Are dogs naturally into fecalphilia? I can understand masking your scent against your prey (as an animal I mean! I don't have prey nor do I mask my scent with feces!) but there's no need to eat it, and why would it make you get your lipstick out?

All dogs are not the same are they? I conclude, Barley is a fecalphiliac.

"Exhibit A"

"Exhibit B"
"Exhibit C"