I love the way a cuttlefish can change colour and texture and do a running neon sign effect:
And this shows how a cuttlefish can react to humans showing him a picture of himself in a video camera:
Think about it. This is an invertibrate, a relative of a snail, and it is very aware of its environment, has a fantastic camouflage capability, and has a very small brain. An octopus is actually surprisingly intelligent.