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Azubat are completely blind and roost in underground caves, using their echolocation to navigate. They often struggle to differentiate water from cave floors, so they have large tail floats to prevent sinking if they crash.

Azubat is not very good at flying yet, so it uses its bouncy tail to get off the ground. It tends to freeze up around malicious people and Pokémon.

While living in pitch-black caverns, their eyes gradually grew shut and deprived them of vision. Its tail, which is packed with nutrition, is very bouncy like a rubber ball.