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Cats: I reject your reality and substitute my own. I'm not sure if there are any other animals that are crepuscular, but I assume there are.
Very neat write-up; thank you!
Yeah, crepuscular animals are weird. They have circadian rhythms (the circadian clock is incredibly well conserved across vertebrates and to a lesser extent, across invertebrates), but I'm not actually entirely sure how their circadian clock work to get them to wake up at dawn/dusk