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

--- a/net/minecraft/world/entity/TamableAnimal.java
+++ b/net/minecraft/world/entity/TamableAnimal.java
@@ -27,6 +27,11 @@
 import net.minecraft.world.level.pathfinder.PathType;
 import net.minecraft.world.level.pathfinder.WalkNodeEvaluator;
 import net.minecraft.world.scores.PlayerTeam;
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityTeleportEvent;
+// CraftBukkit end
 
 public abstract class TamableAnimal extends Animal implements OwnableEntity {
 
@@ -295,7 +300,14 @@
         if (!this.canTeleportTo(new BlockPos(x, y, z))) {
             return false;
         } else {
-            this.moveTo((double) x + 0.5D, (double) y, (double) z + 0.5D, this.getYRot(), this.getXRot());
+            // CraftBukkit start
+            EntityTeleportEvent event = CraftEventFactory.callEntityTeleportEvent(this, (double) x + 0.5D, (double) y, (double) z + 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;
         }