Fullness only displays when you have vore enabled. Added anal vore pref.

combat.js

@@ -220,7 +220,8 @@ function grappleAnalVore(attacker) {
       function(attacker, defender) { return isNormal(attacker) && isGrappled(defender) && defender.flags.shrunk != true ; }
     ], conditions: [
       function(attacker, defender) { return defender.prefs.prey; },
-      function(attacker, defender) { return defender.prefs.vore.anal > 0; }
+      function(attacker, defender) { return defender.prefs.vore.anal > 0; },
+      function(attacker, defender) { return attacker.prefs.pred.anal; }
     ],
     priority: 1,
   };

feast.css

@@ -189,6 +189,11 @@ button {
   width: 150px;
 }
 
+.pref-gray {
+  background: #111 !important;
+  color: #333 !important;
+}
+
 .pref-radio:checked + label.pref-disable {
   background: #711;
   color: #eee;

feast.html

@@ -205,6 +205,15 @@
         <li>
           <ul class="pref-list">
             <div>Player stuff</div>
+            <li class="pref-select">
+              <span class="pref-type">Ass</span>
+              <input type="radio" class="pref-radio" id="character-parts-anal-off" disabled="true" name="parts-anal" value="0" />
+              <label class="pref-disable pref-gray" for="character-parts-anal-off">Disable</label>
+              <input type="radio" class="pref-radio" id="character-parts-anal-on" name="parts-anal" checked="true" value="1" />
+              <label class="pref-enable" for="character-parts-anal-on" checked="true">Enable</label>
+              <input type="radio" class="pref-radio" id="character-parts-anal-vore" name="parts-anal" checked="true" value="2" />
+              <label class="pref-prefer" for="character-parts-anal-vore" checked="true">Enable Vore</label>
+            </li>
             <li class="pref-select">
               <span class="pref-type">Cock/balls</span>
               <input type="radio" class="pref-radio" id="character-parts-cock-off" name="parts-cock" value="0" />

feast.js

@@ -258,10 +258,22 @@ function updateDisplay() {
   document.getElementById("stat-dex").innerHTML = "Dex: " + player.dex;
   document.getElementById("stat-con").innerHTML = "Con: " + player.con;
   document.getElementById("stat-stomach").innerHTML = "Stomach: " + round(player.stomach.fullness(),0) + "/" + player.stomach.capacity;
-  document.getElementById("stat-bowels").innerHTML = "Bowels: " + round(player.bowels.fullness(),0) + "/" + player.bowels.capacity;
-  document.getElementById("stat-balls").innerHTML = "Balls: " + round(player.balls.fullness(),0) + "/" + player.balls.capacity;
-  document.getElementById("stat-womb").innerHTML = "Womb: " + round(player.womb.fullness(),0) + "/" + player.womb.capacity;
-  document.getElementById("stat-breasts").innerHTML = "Breasts: " + round(player.breasts.fullness(),0) + "/" + player.breasts.capacity;
+  if (player.prefs.pred.anal || player.prefs.scat)
+    document.getElementById("stat-bowels").innerHTML = "Bowels: " + round(player.bowels.fullness(),0) + "/" + player.bowels.capacity;
+  else
+    document.getElementById("stat-bowels").innerHTML = "";
+  if (player.prefs.pred.cock)
+    document.getElementById("stat-balls").innerHTML = "Balls: " + round(player.balls.fullness(),0) + "/" + player.balls.capacity;
+  else
+    document.getElementById("stat-balls").innerHTML = "";
+  if (player.prefs.pred.unbirth)
+    document.getElementById("stat-womb").innerHTML = "Womb: " + round(player.womb.fullness(),0) + "/" + player.womb.capacity;
+  else
+    document.getElementById("stat-womb").innerHTML = "";
+  if (player.prefs.pred.breast)
+    document.getElementById("stat-breasts").innerHTML = "Breasts: " + round(player.breasts.fullness(),0) + "/" + player.breasts.capacity;
+  else
+    document.getElementById("stat-breasts").innerHTML = "";
 
 }