Salamander and sheep both have no bad ending but there exist a bad ending on the farm if you cleared the guild quest about finding the missing eggs. I think that ending is already in 0.5 if i remember correctly.
All alternative endings are found in the same quest, which is in the forest of beginnings where Nana starts as a fox. The monument there can be repaired and used to travel back home resulting in various alterantive endinds, dependin on in which form you travel back.