I would go for no idea yet. It will be very difficult to know whether they dream the same way we do. That said, sometimes I do see my squirrels made noises during sleep. It would be very interesting what they dream about and to know why. At the moment, we do, to some extent, know that animals show similar reasons behind sleep (e.g. resume or save energy, avoid predators etc). So hopefully these similar pattern could shed some lights on dreaming as well.
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