Our almost two year old Newf has a strange habit. Though her and our other dog have shredded many stuffed animals there is one that she has chosen to not destroy. She carries a teddy bear in her mouth or lays down in the fetal position and sucks on it like a large nipple. She seems quite content " and in a zone" while doing it. Other than the fact that it smells horrible after two years of suckling it seems harmless to me. Anyone else seen the same thing?