human gets sheep pregnant?

[Janiece Raylene Hutchins]

I work at a wastewater plant, with people who are not very educated.
A majority of those people believe a man can get a sheep pregnant.
They say they believe it because a female's sheeps reproductive parts
are so much like that of a human woman.  A few of us who have had 
college Biology tried to argue, but the other will not believe it.
I have be challenged to find proof that it is impossible.  If someone will 
send me e-mail, someone that is a doctor or other type expert.  I have
many biology text books and will also use that as proof.  
(send e-mail to hutchin3 at whale.st.usm.edu)