Male bowerbirds also spend a long time creating elaborate displays to impress the females. The pufferfish certain have some kind of spatial savvy, but I don't know that I'd call it "reasoning" exactly. Dogs are said to have poor eyesight, but it's amazing how some can run after a thrown Frisbee and leap to catch it in mid-air. Re pufferfish, I'd like to know the vantage point of the female surveying the male's finwork: Is it from way above, as in the video, showing the macro pattern, or something else? —Dan Brent Meeker wrote: ----- I wonder if we can infer some simple algorithm that might be encoded in the little fellow such that he produces this. LC wrote: -------- Forwarded Message -------- https://www.youtube.com/watch?v=p1PID91sEW8 The thing that is remarkable is there is a high measure of spatial reasoning in this fish in order to do this. I would ordinarily consider a dog more intelligent than a fish, but as far as I can see dogs have almost no spatial reasoning. -----