Mark, I am impressed with your responses to people's problems. I have a 3 year old Sheltie who displays sucking behavior towards me and my mother. We are his primary care-givers. Sucking is only one of his behavior issues, but he frequently sits on us or next to us and sucks on our clothing as if he were nursing. We have never been able to figure out why. I think that he was taken from his mom too early in life. He is very content when he is sucking on us. He doesn't make holes in our clothes, just sucks and nibbles with his front teeth. Any idea why he does this?

