We have a three year old border collie mix. Sweetest dog you could ask for. Ever since my wife got pregnant, we have seen a behavior change in him. He constantly will have his nose in my wife's rear, and humps incessantly. That we've been able to handle for the most part. Here's where it gets scary.... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.