Dog and Cat: Which first?

Here's a challenge for all you animal lovers out there.

If you want to house a cat and dog together, what should you do first?

A: Have a cat and then a dog
B:Have a dog first and then a cat
C: Put both together at the same time

Answer: Put the dog first, because cats will first think it is a guest at the home so it will treat the dog with more respect because it is already living there. If you put the cat first, the cat would think: Hey! This is my territory! It would think the dog is a invader.