Or maybe better a better mouse catcher. "Bear" a 3 year old Lab we rescued, walks beside me as I bushhog and waits on me to flush out a field rat etc. He rarely ever lets one get away if they play fair (not go into an underground burrow etc). He will follow along for hours and when he catches one, is a little sadistic in that it's usually not a quick death for the victim. Bear will throw it in the air, let it loose and catch it again before leaving it behind to die a slow death.
Any one else have a mouse catcher in the family?