Hi guys
I don´t agree at all with caimans being more aggressive than crocs.
I work in a crocodile zoo in Denmark and we have 21 of the 23 species of crocodilian.
The two species we don´t have, are the Orinoco and American crocodile.
In general i think the crocs are more agressive, than the caimans, alligators and garials.
The most placid of them all, are Amarican alligators and Chinese alligators. And almost as placid (especially adults) Are the dwarf caimans (palpebrosus). I know most of you guys think of palpebrosus as being agressive, but it´s not my experience at all.
When we clean the enclosure of the adult palpebrosus, they sometimes walk between our legs or sometimes they just lay right next to us without any form of agression.
In my believe some of the most agressive species is saltwater crocodile, new guinea crocodile, dwarf crocodile and broadsnouted caiman ( a caiman i know and the most dangerous is in my opinion the cuban crocodiles. And that´s because they don´t fear you at all. They just come right up to you and they are always hungry

Jonas