I found out that there has been a previous report to animal control on these dogs. The owners are mid-20ish marrieds who rent a home in the neighborhood. They have an 18-month-old baby. Possibly the type to think it's "cool" to own animals that could potentially harm a human. They have not made any offers to me.
They have told other neighbors that they are fortifying their fence and trying to locate a home in the country for the dogs.