There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
I also think a lion may be slightly harder to estimate weight just because his mane would hide many features that you could use to compare. I:E: Shoulder height, chest girth, neck girth and fore limb girth.
I would assume the best way to estimate a lion would be by its mid section, rear section, body length and back height.