I saw this video and it seemed remarkably like how humans would behave. Even though going into the trap means that you can never return and will probably die from rat cannibalism, that’s where the other rats are and you want to do the same as they do.
Its a social thing.
And it is insane.
You need to learn a lesson from this. Sometimes people will travel down a road of doom (or as your mother used to say, jump off a bridge), because other people do it. You don’t have to. No need to be eaten by rats!