While I agree that it's silly to pretend like dreams are something exclusive to humans (especially considering that our prefrontal cortex is largely deactivated during them anyway), I think it can be misleading to categorise all animals as having similar experiences to humans in their dreams.
Take Dolphins for example. They need to keep one hemisphere active at all times to keep themselves swimming and breathing while the other rests so at some point in their sleep, the hemisphere that's resting swaps over. This is going to give their dreams a very different feel to ours, possibly something in between a lucid and regular dream, and those are fellow mammals!
Imagine how different the experience of even birds must be never mind Octopuses which are 600 million years removed from us in terms of evolution and have a neural structure that is far more distributed than our own. Perhaps individual octopi legs have their own separate stream of consciousness distinct from the animal as a whole.
Take Dolphins for example. They need to keep one hemisphere active at all times to keep themselves swimming and breathing while the other rests so at some point in their sleep, the hemisphere that's resting swaps over. This is going to give their dreams a very different feel to ours, possibly something in between a lucid and regular dream, and those are fellow mammals!
Imagine how different the experience of even birds must be never mind Octopuses which are 600 million years removed from us in terms of evolution and have a neural structure that is far more distributed than our own. Perhaps individual octopi legs have their own separate stream of consciousness distinct from the animal as a whole.