diff --git a/ch10-primer-on-oop/2-instantiate-an-object.py b/ch10-primer-on-oop/2-instantiate-an-object.py
index b82df51..d80c7b3 100644
--- a/ch10-primer-on-oop/2-instantiate-an-object.py
+++ b/ch10-primer-on-oop/2-instantiate-an-object.py
@@ -8,6 +8,12 @@ class Dog:
     species = "Canis familiaris"
 
     def __init__(self, name, age, coat_color):
+        if not name:
+            raise ValueError("Missing Name")                 #Use if use User Input!!
+        elif not age:
+            raise ValueError("Missing Age")
+        elif not coat_color:
+            raise ValueError("Missing Coat_color")
         self.name = name
         self.age = age
         self.coat_color = coat_color