Nile (top) and Saltwater (bottom) crocodiles can interbreed into completely normal hatchlings with no deformities, but it can only happen in captivity and sometimes in the wild. They exhibit a combination of both parents with more aggression in territory and hunting. Nile-saltwater hybrids are also fertile meaning they can have offspring unlike ligers (lion tiger hybrid). Triple hybrids also exists being a Siamese - Saltie - Cuban mix. The Nile and Saltwater Crocodile also just happen to be the biggest and most aggressive species of crocodile