toby ramos is a total pro. in all these years, he has captured thousands of animals and yet only been bitten twice. we were eager to watch-- from a safe distance. he is not in it for the thrill, but rather to protect the species. poaching is only part of the problem. the other threat comes from another species that has flourished her american crocodiles. they thrive here, crowding out their cuban cousins, and also crossbreeding with them,ng hybrid species. >> ( translated ): we have only seen this hybridization happening in two very specific areas. plus other areas where only american crocs are present. >> we are working hard to protect what we have tod because we might lose one of these unique populations c >> reporter:a is replete with unie populations of rare and endangered species. scientists say the cntry is a crown jewel of bio-diversity in the caribbean; its mangrove swamps, coral reefs its populations of unique amphibians, reptiles and bir are all unsurpassed. >> now, we are heading onto an open area wi