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.
If we're going past mammals, than this thread should have been finished within a few posts instead of a few pages: some of the beetles within the beetle family (rhino beetle) can easily win this.
But only with mammals, it is a complicated issue but most would aim more towards carnivores for your question's answer.