Bibliography (7):

1. I Cloned My Dog—They Have Completely Different Personalities

2. Born in Korea-adopted apart: Behavioral development of monozygotic twins raised in the United States and France

3. The Man of Your Dreams For $300, Replika sells an AI companion who will never die, argue, or cheat—until his algorithm is updated

4. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Shih_Tzu  :

      https://en.wikipedia.org/wiki/Shih_Tzu

   2. Ragdoll

   3. Cat

   4. Dachshund