You can acquire pets in World of Warcraft. I have close to a dozen. They don't do much, aside from follow you around and make noises periodically. The best pet in the game by far is the "Perky Pug," a special pet you receive after a certain in-game achievement.

He's awesome and I have one. Yeaaaaah!

Here's a romantic shot of me and my pug by a roaring fire in Dalaran. The point is: World of Warcraft is awesome because we get digital pooches.