"My cat hated me for two months when I brought home his sister," one social-media user commented on the viral clip.

You have to see how this older Doxie reacts when her new puppy brother walks through the door.

One user related: "I felt the same way when my parents brought my little brother home, I get it.” ...

A golden retriever's perfect big brother moment.

This is read by an automated voice. Please report any issues or inconsistencies here. For any dog owner, bringing home a new puppy is a lot like welcoming a human baby into the home. With that arrival ...