I was loading the game with this mod and it threw a few errors regarding the wasteland deer. I noticed that it was trying to access Things/Pawn/Animal/WastelandDeer/WastelandDeer. I assume it is because the genders are specified in the file names but not in the code when it goes to look up the textures (I could be mistaken as I have never touched this specific game's code, I'm just going by intuition here). I'm currently unsure of its impact on the game since I'm still trying to ♥♥♥♥♥♥ the rest of my modlist. I'm posting it as its own discussion so I don't hoard all of the comment space with logs lol

Failed to find any textures at Things/Pawn/Animal/WastelandDeer/WastelandDeer while constructing Multi(initPath=Things/Pawn/Animal/WastelandDeer/WastelandDeer, color=RGBA(1.000, 1.000, 1.000, 1.000), colorTwo=RGBA(1.000, 1.000, 1.000, 1.000))
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
Verse.Graphic_Multi:Init (Verse.GraphicRequest)
Verse.GraphicDatabase:GetInner<Verse.Graphic_Multi> (Verse.GraphicRequest)
Verse.GraphicDatabase:Get (System.Type,string,UnityEngine.Shader,UnityEngine.Vector2,UnityEngine.Color,UnityEngine.Color,Verse.GraphicData,System.Collections.Generic.List`1<Verse.ShaderParameter>,string)
Verse.GraphicData:Init ()
Verse.GraphicData:get_Graphic ()
Rimpedia.AnimalGraphic/StageAnimalGraphic:.ctor (Verse.PawnKindDef,Verse.PawnKindLifeStage,bool)
Rimpedia.AnimalGraphic:.ctor (Verse.ThingDef)
Rimpedia.RimpediaAnimalThing:.ctor (Verse.ThingDef)
Rimpedia.ThingList:.ctor ()
Rimpedia.Cache:.cctor ()
System.Runtime.CompilerServices.RuntimeHelpers:RunClassConstructor (System.RuntimeTypeHandle)
BetterLoading.Stage.InitialLoad.StageRunStaticCctors/<StaticConstructAll>d__16:MoveNext ()
UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr)

Rimpedia : [ Fail load : Rimstag (ReGrowth.BOTR.WastelandFauna) ]
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
Rimpedia.CacheString:FailLoadError (Verse.ThingDef)
Rimpedia.ThingList:.ctor ()
Rimpedia.Cache:.cctor ()
System.Runtime.CompilerServices.RuntimeHelpers:RunClassConstructor (System.RuntimeTypeHandle)
BetterLoading.Stage.InitialLoad.StageRunStaticCctors/<StaticConstructAll>d__16:MoveNext ()
UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr)

Object reference not set to an instance of an object in RG-WF_WastelandDeer(ReGrowth: Mutated Animals Pack) at Rimpedia.AnimalGraphic+AnimalSingleGraphic..ctor (Verse.Graphic g, System.Single scale) [0x00039] in <e30fdcd4f6ae4145a3a97fb8775703b3>:0
at Rimpedia.AnimalGraphic+StageAnimalGraphic..ctor (Verse.PawnKindDef pawn, Verse.PawnKindLifeStage stage, System.Boolean isPack) [0x0006c] in <e30fdcd4f6ae4145a3a97fb8775703b3>:0
at Rimpedia.AnimalGraphic..ctor (Verse.ThingDef td) [0x0011f] in <e30fdcd4f6ae4145a3a97fb8775703b3>:0
at Rimpedia.RimpediaAnimalThing..ctor (Verse.ThingDef td) [0x0002b] in <e30fdcd4f6ae4145a3a97fb8775703b3>:0
at Rimpedia.ThingList..ctor () [0x001e1] in <e30fdcd4f6ae4145a3a97fb8775703b3>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
Rimpedia.ThingList:.ctor ()
Rimpedia.Cache:.cctor ()
System.Runtime.CompilerServices.RuntimeHelpers:RunClassConstructor (System.RuntimeTypeHandle)
BetterLoading.Stage.InitialLoad.StageRunStaticCctors/<StaticConstructAll>d__16:MoveNext ()
UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr)