The animals tab doesn't allow you to set allowed areas, show the mountable toggle columns, and it spams the debug log as long as the tab is open. I'm not sure what the exact issue is since Kyulen runs with the older Giddy-Up mod and all its modules without issue.

https://gist.github.com/11ef9514b9c928a4a1a6734e00dd6f42

And debug log if it helps.

Exception filling window for RimWorld.MainTabWindow_Animals: System.NullReferenceException: Object reference not set to an instance of an object
at Ninetail.Patch_GiddyUp2.PrePatchA (System.Boolean& __result, Verse.Pawn rider) [0x00001] in <7147f342ce904fbdaa609187487f6743>:0
at (wrapper dynamic-method) GiddyUp.IsMountableUtility.GiddyUp.IsMountableUtility.IsMountable_Patch1(Verse.Pawn,GiddyUp.IsMountableUtility/Reason&,Verse.Pawn,bool,bool,bool)
at GiddyUp.IsMountableUtility.IsEverMountable (Verse.Pawn pawn, GiddyUp.IsMountableUtility+Reason& reason) [0x00000] in <e7903f7ce0924dadae94e9079a889ca6>:0
at GiddyUp.IsMountableUtility.IsEverMountable (Verse.Pawn pawn) [0x00000] in <e7903f7ce0924dadae94e9079a889ca6>:0
at GiddyUpRideAndRoll.PawnColumnWorker_Mountable_Colonists.HasCheckbox (Verse.Pawn pawn) [0x00000] in <e7903f7ce0924dadae94e9079a889ca6>:0
at RimWorld.PawnColumnWorker_Checkbox.DoCell (UnityEngine.Rect rect, Verse.Pawn pawn, RimWorld.PawnTable table) [0x00000] in <38562b1a2ab64eacb931fb5df05ca994>:0
at RimWorld.PawnTable.PawnTableOnGUI (UnityEngine.Vector2 position) [0x0028d] in <38562b1a2ab64eacb931fb5df05ca994>:0
at RimWorld.MainTabWindow_PawnTable.DoWindowContents (UnityEngine.Rect rect) [0x00020] in <38562b1a2ab64eacb931fb5df05ca994>:0
at RimWorld.MainTabWindow_Animals.DoWindowContents (UnityEngine.Rect rect) [0x00000] in <38562b1a2ab64eacb931fb5df05ca994>:0
at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001d3] in <38562b1a2ab64eacb931fb5df05ca994>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)