Boomer,

I couldn't access the link, so can't comment.

- However, I do firmly believe elephants are in a catagory of their own and learn & remember from both good and bad previous experience........ I've seen this proved by their behaviour on many occasions.

As to why tuskless Elephants are more aggressive than tusked ones, I think it's probably a combination of factors but as I'm not an Elephant I can't really comment further. To do so, would be pure speculation............