farmers saving money by not spraying, that causes the burrs to spread and get worse. sand burrs and buffalo heads are 2 separate animals, the smaller, prickly burrs are worse, they stick to everything, get in between the dogs pads and quickly rub them raw.....i don't see that many buffalo heads, those are the ones with the sharp, elongated double points, hence they look a lot like a buffalo head....both, not good....rubber boots are the answer, they will turn the burrs, which is most of what you will have to deal with.