"Everyone who got on sort of did a double take, followed by a few expletives because they couldn't believe there was an alligator on the El," Strotman told WMAQ-TV.
Images show woman on Chicago train with alligator →
"She couldn't have been nicer," Strotman said. "She said she had had it since it was very little. She was petting it, and she was very friendly with it. It didn't seem like she was trying to get rid of it."