I graduated from nursing school in 1993 and in my prereqs in Micro we had to bring a stool specimen. We were told it had to be human not animal. I had 3 young children at the time, and two of them tried to poop first so it would be their specimen I would take. I took one specimen and found out my youngest had pinworms. (I did not take her specimen). The funniest thing was our lab proctor. She told us the semester before us there was a student who had a 15year old son and he sold his poop for five bucks per specimen for those who did not want to bring their own.