If the smaller dog does stick it's head thru the fence and Shelby is there it is not going to be pretty. I talked to the new folks down the road few days ago...he told me that these dogs have been on his property. He doesn't have any fencing yet...but he has a couple kennels for his pups. He is working on teaching his pups the property boundries...but is more than concerned about these 2 dogs creating problems.