diff --git a/ai.js b/ai.js
index 5938613..c666e97 100644
--- a/ai.js
+++ b/ai.js
@@ -1,3 +1,11 @@
+/**********************************************************************
+ * CONSTANTS
+ **********************************************************************/
+const ANIMAL_HUNGER_MAX = 100;
+const RABBIT_HUNGER_INCREMENT = 0.05;
+const RABBIT_REPRO_CHANCE = 0.005;
+const RABBIT_REPRO_COOLDOWN = 1000;
+
 /**********************************************************************
  * CITIZEN AI
  **********************************************************************/