LITTLE ROCK, Ark. – Homeless man Grady Allen Carnahan was caught trying to steal a sheep from the Little Rock Zoo on Tuesday night. A security guard called police after noticing a man lugging a trash can with a sheep inside. Carnahan tried to tell police he was a doctor and the sheep was sick. He fought with officers when they tried to take him into custody. He was later arrested on numerous charges and the sheep was returned to its home at the zoo.