Currently it takes 2 hits from a diamond sword to kill a koi fish and 3 hits to kill a ferret. Ignoring the ethical dilemma of my testing, compared to existing entities in the game the ones added in the mod tend to be very tanky. I am proposing a rework in the critter health to better align with vanilla and create a balanced experience:

• Ferret 18 -> 9 this puts it's health in between the cat(8) and wolf/dog(10)

• Otter & Red Panda 18 -> 10 Same health as wolf/dog seems fairly balanced

• Sea Bunny, Koi 8 -> 3 The koi has almost tripple a salmons health and I cant see the sea bunny being super tanky so I think it would be suitable for both to have the same health as fish

• Leaf Insect 6 -> 3
  This is one I am not quite sure as there is no passive insect like insect size entities in the base game, my logic would dictate that it would make sense for the leaf insect to not be super strong so I have chose 3 as that is the same as fish and is a relatively squishy amount you wont accidently kill with a non weapon.

• Dumbo Octopus 14 -> 7 By default same as a axolotl which sort of makes sense they are pretty similar however it is a lot smaller entity and is also passive considering the logic I think halfing makes a bit more sense

• Shima Enaga 10 -> 6 I don't see why it should be more tankier than a parrot so now its not

• Dragonfly Current seems good

Please let me know what you think of the idea of this change, thanks.