Where do I post stuff about caiman? I can't seem to find the crocodilian forum.

Right now there is not a crocodilian section, so I would suggest the general reptiles section. If there is enough participation, I would bet the powers that be would not mind adding a section specifically for them if asked nicely. :)

I'd think general lizards should be fine. There is an extremely limited number of people that have crocodilians of any sort, so they don't have their own section.

I know I would enjoy posts on crocodilians as I find them fascinating. Not sure I could contribute much more than Oohs and Aahs though.