I always thought that humans and other primates were the only ones who could actually REASON, but sharks can certainly be trained, just like other inhabitants of the sea, like dolphins. I would view that statement as being some type of natural learning, not reasoning, per se. The statement from the Nature Foundation that it was extremely unlikely this was a shark attack (before the autopsy was perfomed) was the really odd statement. I guess that was based on how unusual fatal shark attacks are, but this one certainly did seem to be a shark attack from the very start.