The fishing upgrade from the rats mod does not work with this mod installed. Whenever the rat "catches" a fish, nothing appears. I managed to "fix" it by deleting the custom fishing loot tables, but obviously that breaks the custom fishing stuff you did in the prehistoric dimensions. If you need more information let me know. Also, be sure to use rats 7.1.1 because 7.2.0 has issues unrelated to this mod.