What happens when they start losing control of the sheep? Send in a predator to scare them back into submission and compliance.
Zoo Knoxville tiger tests positive for COVID-19 virus; two others presumed infected
https://www.wthr.com/mobile/article/life/animals/zoo-knoxville-tiger-tests-positive-for-covid-19/51-60aa34ce-4e75-472e-a154-e5d797531f2d