Interestingly, turtle ants aren’t in door-mode at all times. You can see the entrance to their nests open, but as soon as they sense danger, be it a top on the wooden wall of their tunnel, or pheromones of an enemy, the door is immediately plugged shut.
[https://www.odditycentral.com/news/door-head-ants-use-their-large-flat-heads-as-doors-to-shut-down-their-nests.html](Here is a short article on them.) According to the article, they stand their ground, even while their head is under attack. Pretty neat ants!
I’m glad they get breaks.