The largest caiman species, the Black caiman, can reach up to 15 feet from tail to snout. The smallest species is the Cuvier’s dwarf caiman — females can reach up to 4 feet and males up to 5 feet.

Revealing active behaviour that adds to our understanding of the nature of a species. Karine Aigner (USA) recognises the skin of a yellow anaconda as it coils itself around the snout of a yacare ...