Does that hold true for animals though? Modern humans sleep on a pretty consistent schedule but my dog sleeps randomly throughout the day. And unfortunately for

Does that hold true for animals though? Modern humans sleep on a pretty consistent schedule but my dog sleeps randomly throughout the day. And unfortunately for him my sleep schedule is utter chaos so he is often up very late And to further make it weird: our vet told us to feed him multiple small feedings throughout the day so the feeder was programmed for 6 feedings with 2 hour intervals from 9am to 9pm. He hit the mark for all feeding times! I still think there is potentially some sort of external prompt(s) though. Circadian rhythm is an excellent idea. Maybe that combined with something hard to detect, like lighting levels (which would explain why the timing shifted a few minutes over a few months). Who knows!