Well, that's just rubbish! As well as elephants which you mentioned, horses eat soil to obtain salt and minerals if they feel they need them (mine also lick my palms because they like salt!). Butterflies do a similar thing. I guess maybe carniverous animals don't because they get their salt from eating other animals.
(Sorry Ben, I think we've gone a bit off topic!)




Well I wasn't going to waste it.
). My humble suggestion is to start with having a look at the existing threads about this topic (personally I often refer people to this thread:
hey! i just said that. 


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