Chica and Bonnie become significantly more aggressive. Foxy also peeks out of the cove much faster than on Night two, so keep an eye on that. Freddy also becomes active on this night, but only a little. He will attack if not kept a close eye on. Use the same method for Night 2, except look at the Show Stage occasionally as well.

If Freddy is getting closer (i.e. East Hall or East Hall Corner), you may want to shut your Right Door whenever you check the cameras. Freddy is most likely to move when the monitor is raised.