If you live in an area with bears and you're going to have your dogs outside, it's probably a good idea to enclose the property in a manner that'll prevent such animals from getting in. Especially considering what would happen if a mother bear happened across them. While most bears will generally run from a couple barking dogs, there's always the chance that they wont. And then you'll probably end up with dead dogs. That being said, I'm glad no one was seriously injured.