Are your dogs friendly to your guests?

What I've read is that you should ignore the behavior. Don't make eye contact. Let the dog come up to you on its own terms.

My dog is unfriendly to strangers so I lock her up when an unknown person (like a repair person) comes over. However, she loves when family and friends come over. Then, it's a case of her being too happy to see them. She can get a little too excited.