Looks like someones moving up in the food chain!
Except otters ARE the apex predator most of the time. Also this picture is misleading, it’s not a single otter but a family of adults protecting their young. Two otters would distract the caiman (smaller relative of gators/crocs) while the rest jumped it. After about an hour of struggling, the caiman was dead from all the otters mauling the shit out of it. Lesson here: don’t fuck with anything’s babies, even if they’re as adorable as otters.