> The coyotes know exactly where the invisible fence begins and ends, without the benefit of ever wearing a shock collar. How do I know? Because they intentiona

> The coyotes know exactly where the invisible fence begins and ends, without the benefit of ever wearing a shock collar. How do I know? Because they intentionally leave their scat on their side of the invisible fence, creating a demilitarized zone as precise and as well-observed as anything on the Korean peninsula. Occasionally a coyote will try to test our dogs by leaving its scat juuusst over the line on our side of the DMZ. My question is, why does the human think coyote scat on the other side of the line was precisely placed and scat on his side of the line is an intentional provocation? A more reasonable explanation is that the coyotes don't know exactly where the invisible line is.