scent marking

That burst of backward scratching is probably not an attempt to bury the evidence. Research suggests dogs use ground scratching as part of a scent-marking system that can leave both chemical and visible signals for other dogs. A dog finishes pooping, takes a step forward, then suddenly starts scraping the ground with its back feet and launching grass or dirt into the air. It may look like an enth.. ดูเพิ่ม