Dangerous Digging

I was cleaning up after the dog and noticed she had dug up something from one of her digging escapades and making my yard look like Beirut. I went over to what it was, but she took off ,with her running around, eying me cautiously upset that I was about to steal her prize, I picked it up. I thought it was just a stick and thought nothing of it, but when I noticed it had little barbs on it, I got concerned! This is the second item she's gnawed on what was foreign that she's dug up from her foot deep digging in the background. See, this property used to be nothing but cow fields. Apparently, this property was cleared, tilled , and made way for properties. It would be nice to get rid of EVERYTHING for future residents {and pets} when clearing land so that no one gets lockjaw or tetnis thank You! What if the dog bit into this rusty barb wire and sliced the roof of her mouth open? She would have needed stitches and a tetnis shot,And I would have a nasty bill on my hands not to mention a dog very much in pain! Or what if say Brendan found it and cut himself open and need the same? Oh , then the dog dug another trench and dug up a crushed beercan! WTF! Does anyone prepare the land for clearing and property siting anymore??!! UGH! Dopey Dog!