I'm not certain, but I think it's possible. If you install the mod, generate a new world with the mod enabled, and copy this mod's folder from the newly generated world's folder and into your current folder, it should work. No promises.

Also no promises on modding more. I'm a pretty subpar pixel artist, so the new face portrait system makes my job harder. Not impossible that I come back when I have more time, though.

Can I somehow add this mod AFTER world generation? I have a tropical fort where this would be really sweet!
BTW, you should create more or update your mods...

Can't seem to figure out how to update the mod, as the in-game publish feature doesn't seem to change anything. Next version will have alligators too, soon as I can figure out how to release it

Does this mod affect alligators as well? If not, I'd like to request that as a feature, pretty please.

It does not.

Does this also change their spawning behavior?

CRY HAVOC AND LET LOOSE THE CROCS OF WAR!!!!