Can shih tzu dogs sleep in the dark?

Shih tzus can sleep in the dark just like any other dog breed. They have no specific requirement for light or darkness when it comes to sleep. Whether a shih tzu sleeps in the dark or not primarily depends on its individual preferences and habits, just like humans have different sleep preferences. Some shih tzus may feel more comfortable and settled in a completely dark environment, while others don't seem to mind having some light.