PaperMC/paper-server/nms-patches/net/minecraft/world/entity/animal/EntityWolf.patch

--- a/net/minecraft/world/entity/animal/EntityWolf.java
+++ b/net/minecraft/world/entity/animal/EntityWolf.java
@@ -88,6 +88,12 @@
 import net.minecraft.world.level.pathfinder.PathType;
 import net.minecraft.world.phys.Vec3D;
 
+// CraftBukkit start
+import org.bukkit.event.entity.EntityRegainHealthEvent;
+import org.bukkit.event.entity.EntityTargetEvent;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+// CraftBukkit end
+
 public class EntityWolf extends EntityTameableAnimal implements IEntityAngerable, VariantHolder<Holder<WolfVariant>> {
 
     private static final DataWatcherObject<Boolean> DATA_INTERESTED_ID = DataWatcher.defineId(EntityWolf.class, DataWatcherRegistry.BOOLEAN);
@@ -350,18 +356,21 @@
         if (this.isInvulnerableTo(damagesource)) {
             return false;
         } else {
-            if (!this.level().isClientSide) {
+            // CraftBukkit start
+            boolean result = super.hurt(damagesource, f);
+            if (!this.level().isClientSide && result) {
+                // CraftBukkit end
                 this.setOrderedToSit(false);
             }
 
-            return super.hurt(damagesource, f);
+            return result; // CraftBukkit
         }
     }
 
     @Override
-    protected void actuallyHurt(DamageSource damagesource, float f) {
+    public boolean actuallyHurt(DamageSource damagesource, float f) { // CraftBukkit - void -> boolean
         if (!this.canArmorAbsorb(damagesource)) {
-            super.actuallyHurt(damagesource, f);
+            return super.actuallyHurt(damagesource, f); // CraftBukkit
         } else {
             ItemStack itemstack = this.getBodyArmorItem();
             int i = itemstack.getDamageValue();
@@ -380,6 +389,7 @@
             }
 
         }
+        return false; // CraftBukkit
     }
 
     private boolean canArmorAbsorb(DamageSource damagesource) {
@@ -401,7 +411,7 @@
     protected void applyTamingSideEffects() {
         if (this.isTame()) {
             this.getAttribute(GenericAttributes.MAX_HEALTH).setBaseValue(40.0D);
-            this.setHealth(40.0F);
+            this.setHealth(this.getMaxHealth()); // CraftBukkit - 40.0 -> getMaxHealth()
         } else {
             this.getAttribute(GenericAttributes.MAX_HEALTH).setBaseValue(8.0D);
         }
@@ -428,7 +438,7 @@
                 FoodInfo foodinfo = (FoodInfo) itemstack.get(DataComponents.FOOD);
                 float f = foodinfo != null ? (float) foodinfo.nutrition() : 1.0F;
 
-                this.heal(2.0F * f);
+                this.heal(2.0F * f, EntityRegainHealthEvent.RegainReason.EATING); // CraftBukkit
                 return EnumInteractionResult.sidedSuccess(this.level().isClientSide());
             } else {
                 if (item instanceof ItemDye) {
@@ -476,7 +486,7 @@
                             this.setOrderedToSit(!this.isOrderedToSit());
                             this.jumping = false;
                             this.navigation.stop();
-                            this.setTarget((EntityLiving) null);
+                            this.setTarget((EntityLiving) null, EntityTargetEvent.TargetReason.FORGOT_TARGET, true); // CraftBukkit - reason
                             return EnumInteractionResult.SUCCESS_NO_ITEM_USED;
                         } else {
                             return enuminteractionresult;
@@ -494,7 +504,8 @@
     }
 
     private void tryToTame(EntityHuman entityhuman) {
-        if (this.random.nextInt(3) == 0) {
+        // CraftBukkit - added event call and isCancelled check.
+        if (this.random.nextInt(3) == 0 && !CraftEventFactory.callEntityTameEvent(this, entityhuman).isCancelled()) {
             this.tame(entityhuman);
             this.navigation.stop();
             this.setTarget((EntityLiving) null);