PaperMC/paper-server/patches/sources/net/minecraft/world/entity/EntityTameableAnimal.patch

--- a/net/minecraft/world/entity/EntityTameableAnimal.java
+++ b/net/minecraft/world/entity/EntityTameableAnimal.java
@@ -28,6 +28,12 @@
 import net.minecraft.world.level.pathfinder.PathfinderNormal;
 import net.minecraft.world.scores.ScoreboardTeam;
 
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityTeleportEvent;
+// CraftBukkit end
+
 public abstract class EntityTameableAnimal extends EntityAnimal implements OwnableEntity {
 
     public static final int TELEPORT_WHEN_DISTANCE_IS_SQ = 144;
@@ -295,7 +301,14 @@
         if (!this.canTeleportTo(new BlockPosition(i, j, k))) {
             return false;
         } else {
-            this.moveTo((double) i + 0.5D, (double) j, (double) k + 0.5D, this.getYRot(), this.getXRot());
+            // CraftBukkit start
+            EntityTeleportEvent event = CraftEventFactory.callEntityTeleportEvent(this, (double) i + 0.5D, (double) j, (double) k + 0.5D);
+            if (event.isCancelled()) {
+                return false;
+            }
+            Location to = event.getTo();
+            this.moveTo(to.getX(), to.getY(), to.getZ(), to.getYaw(), to.getPitch());
+            // CraftBukkit end
             this.navigation.stop();
             return true;
         }