We have generally used the scientific binomial names for crocodilians rather than common names. The scientific names are unique, unambiguous and internationally recognized, while each species has a plethora of common and colloquial names that can cause great confusion. We have inserted some common names to orient the lay reader. Yacar , Caiman yacare . Cooperative group feeding.
Crocodilians have a complex social structure that is poorly understood.
Photo by C. Yamashita.