Based on the context and the answer, generate a question. 

Context: Posted by : Aubbiedoo - I was at a zoo with my mom and dad . And we decided to go see the monkeys . Then there was a bunch of screaming as people were running away . Me and my family were wondering what was up so we continued walking in the same direction .

Answer:

There might have been an emergency incident at the zoo .



Why might have people been running away ?