diff --git a/1.3/Assemblies/RJW_Menstruation.dll b/1.3/Assemblies/RJW_Menstruation.dll
index bb410bf..321d8ad 100644
Binary files a/1.3/Assemblies/RJW_Menstruation.dll and b/1.3/Assemblies/RJW_Menstruation.dll differ
diff --git a/1.3/source/RJW_Menstruation/RJW_Menstruation/Patch/RJW_Patch.cs b/1.3/source/RJW_Menstruation/RJW_Menstruation/Patch/RJW_Patch.cs
index 6e20029..ef7199b 100644
--- a/1.3/source/RJW_Menstruation/RJW_Menstruation/Patch/RJW_Patch.cs
+++ b/1.3/source/RJW_Menstruation/RJW_Menstruation/Patch/RJW_Patch.cs
@@ -168,6 +168,8 @@ namespace RJW_Menstruation
         }
         public static void Postfix(ref float __result, Pawn fucker, Pawn fucked)
         {
+            if (__result <= 0) return;
+
             if (HediffComp_Menstruation.IsInEstrus(fucker, true) && PregnancyHelper.CanImpregnate(fucked, fucker))
             {
                 __result *= (1f + GetNetFertility(fucker, fucked) / 4);
@@ -176,6 +178,10 @@ namespace RJW_Menstruation
             {
                 __result *= (1f + GetNetFertility(fucker, fucked) / 40);
             }
+            else if(xxx.is_animal(fucker) && HediffComp_Menstruation.IsInEstrus(fucked, true) && PregnancyHelper.CanImpregnate(fucker, fucked))
+            {
+                __result *= 1.25f;
+            }
         }
     }