Since I know about all of the junk that cows have been known to eat, I think I'd be surprised to to learn that another much larger herbivore didn't have some junk in it's gut.
The magnets are almost a case of truth is stranger than fiction. Now that you've heard about them, bet you'll remember & maybe you'll be the one adding a bit of odd knowledge to some conversation some day. LOL
definitely.. odd things like this tend to stick in my head :-P