diff --git a/src/animals/fluffles.ts b/src/animals/fluffles.ts
index 86a252f..651fb29 100644
--- a/src/animals/fluffles.ts
+++ b/src/animals/fluffles.ts
@@ -258,7 +258,7 @@ export class Fluffles extends Animal {
     ];
     
     // Check each adjacent position for food
-    let bestFoodPosition = null;
+    let bestFoodPosition: Position | null = null;
     let bestFoodValue = 0;
     
     for (const pos of adjacentPositions) {
@@ -309,7 +309,7 @@ export class Fluffles extends Animal {
     
     if (nearbyAnimals.length > 0) {
       // Find the closest fluffles
-      let closestFluffles = null;
+      let closestFluffles: Animal | null = null;
       let closestDistance = Infinity;
       
       for (const animal of nearbyAnimals) {
@@ -368,7 +368,7 @@ export class Fluffles extends Animal {
     
     if (potentialTargets.length > 0) {
       // Find the closest target
-      let closestTarget = null;
+      let closestTarget: Animal | null = null;
       let closestDistance = Infinity;
       
       for (const animal of potentialTargets) {
diff --git a/src/animals/rabbit.ts b/src/animals/rabbit.ts
index fedf038..9391365 100644
--- a/src/animals/rabbit.ts
+++ b/src/animals/rabbit.ts
@@ -181,9 +181,10 @@ export class Rabbit extends Animal {
   private seekCompany(): void {
     const nearbyAnimals = this.world.getAnimalsInRadius(this.position, 3);
     
+    let closestRabbit: Animal | null = null;
+    
     if (nearbyAnimals.length > 0) {
       // Find the closest rabbit
-      let closestRabbit = null;
       let closestDistance = Infinity;
       
       for (const animal of nearbyAnimals) {
@@ -214,6 +215,8 @@ export class Rabbit extends Animal {
   private searchForMates(): void {
     const nearbyAnimals = this.world.getAnimalsInRadius(this.position, 2);
     
+    let closestRabbit: Animal | null = null;
+    
     for (const animal of nearbyAnimals) {
       if (animal.getId() !== this.id) { // Not self
         const pos = animal.getPosition();