Happens all the time. My neighbor across the road has questionable fences and over stocks his cows. Naturally they are out as much as in. For a number of years, most cars stop at my place to let me know my cows are out, I think because my barn looks like one, and his looks like, well---sh*t. 99% of the time his are out and mine aren't . Sometimes I find them in my hay loft up the high drive. Wouldn't be such a problem, except that he works off the place and is seldom around, and his wife and son won't respond when I knock on the door to help round up his cattle. My son and I generally will collect his strays, because they are unsafe in the road, but it sure has gotten old. I often just ask "do the cattle have horns and no ear tags?" and if so, I direct them across the road.