Zubat lives in abundance in dark caves, although it has also been known to dwell in forests and under the eaves of old buildings. Due to its habitat, Zubat has evolved to have neither eyes nor nostrils. It instead navigates through dark environments and tight caves with echolocation, emitting ultrasonic cries to detect targets and obstacles. The frequency of these cries can vary slightly between Zubat colonies. It will leave its abode at night with a mass of other Zubat in order to seek prey. Zubat is nocturnal, and sleeps hanging upside down during the daytime, avoiding sunlight at all costs. Daylight causes Zubat to become unhealthy, and prolonged exposure can even burn its skin. However, captured and trained Zubat have been recorded as being much more tenacious in the daytime, even when directly exposed to sunbeams. While sleeping, or in colder conditions, Zubat gathers with others of its kind for warmth.