Yeah its fun to have uncommon pets.
A friend and I had 3 serpent pets in a pool in our base. They always say hello when we get home. We fed them with rafts and we also set up a boar breeder above the pool… but we removed it because we didn’t want to have business with PETA 😅
Here is a picture of the first one we captured. A rare picture of a wild serpent being fed in captivity 😂
https://steamcommunity.com/sharedfiles/filedetails/?id=2741002642

This was before the last update and the server is now shut down, so i cannot check if they are still there. Also i think one of them was night spawn which didn’t despawn. I guess that is because they need to swim further away to despawn.
However, i also have one in my first world. I will check it later.