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.
@Pckts said, "Bears (brown and black, probably polar as well but they seem to be too unpredictable for a trainers liking.)"
Although polar bears aren't overtly aggressive as grizzlies (but are still unpredictable), this does not detract from their intelligence. Bears have one of the highest brain-body size ratios on the planet, and surprisingly, polar bears rule over all other bears in this aspect.
When I made my list, I was mainly referring to intelligence from learnt self-experience, emotional, physical-mental intelligence, and logical intelligence, instead of trainers' tricks or learned behaviors from humans.