Alex Kortran, photographer for the Ohio State University student newspaper The Lantern, was detained last week by campus police and is facing criminal trespass charges.
Kortran was attempting to make images of police and university workers corral two cows who were loose on campus. During the time Kortran was detained, police cornered and tranquilized one of he two animals.
Campus police say they are still investigating the incident.
I think the word you are looking for is "corral."