Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
At your site the rat can eat another rat when leaving the lake but cannot do so with an elephant.
Redsales: I'm sure you can buy a set locally and ask some Chinese for a ruling(?)