Trichuris vulpis (whipworm) is type of intestinal parasites commonly affecting dogs. The whipworm lives in the large intestine, where it bites the tissue and embeds its head inside. Like the hookworm, the whipworm sucks the host's blood for sustenance. Whipworms are even smaller than roundworms and ovas are rarely seen in the stool. But here we have a positive case.
"See, It is a Trichuris egg" and the patient can confirm the finding.