--- a/net/minecraft/world/entity/animal/sniffer/Sniffer.java
+++ b/net/minecraft/world/entity/animal/sniffer/Sniffer.java
@@ -75,12 +75,21 @@
 
     public Sniffer(EntityTypes<? extends EntityAnimal> entitytypes, World world) {
         super(entitytypes, world);
-        this.entityData.define(Sniffer.DATA_STATE, Sniffer.a.IDLING);
-        this.entityData.define(Sniffer.DATA_DROP_SEED_AT_TICK, 0);
+        // this.entityData.define(Sniffer.DATA_STATE, Sniffer.a.IDLING); // CraftBukkit - moved down to appropriate location
+        // this.entityData.define(Sniffer.DATA_DROP_SEED_AT_TICK, 0); // CraftBukkit - moved down to appropriate location
         this.getNavigation().setCanFloat(true);
         this.setPathfindingMalus(PathType.WATER, -2.0F);
     }
 
+    // CraftBukkit start - SPIGOT-7295: moved from constructor to appropriate location
+    @Override
+    protected void defineSynchedData() {
+        super.defineSynchedData();
+        this.entityData.define(Sniffer.DATA_STATE, Sniffer.a.IDLING);
+        this.entityData.define(Sniffer.DATA_DROP_SEED_AT_TICK, 0);
+    }
+    // CraftBukkit end
+
     @Override
     protected float getStandingEyeHeight(EntityPose entitypose, EntitySize entitysize) {
         return this.getDimensions(entitypose).height * 0.6F;
@@ -278,7 +287,7 @@
         List<BlockPosition> list = (List) this.getExploredPositions().limit(20L).collect(Collectors.toList());
 
         list.add(0, blockposition);
-        this.getBrain().setMemory(MemoryModuleType.SNIFFER_EXPLORED_POSITIONS, (Object) list);
+        this.getBrain().setMemory(MemoryModuleType.SNIFFER_EXPLORED_POSITIONS, list); // CraftBukkit - decompile error
         return this;
     }
 
@@ -416,7 +425,7 @@
 
     @Override
     public BehaviorController<Sniffer> getBrain() {
-        return super.getBrain();
+        return (BehaviorController<Sniffer>) super.getBrain(); // CraftBukkit - decompile error
     }
 
     @Override