What is hidden in 3D image?

If you want someone who will bring you the paper without first tearing it apart to remove the sports section
Buy a dog.
If you want someone willing to make a fool of himself simply over the joy of seeing you
Buy a dog.
If you want someone who will eat whatever you put in front of him and never says its not quite as good as his mother made it
Buy a dog
If you want someone always willing to go out, at any hour, for as long and wherever you want
Buy a dog.
If you want someone who will never touch the remote, doesn't care about football, and can sit next to you as you watch romantic movies
Buy a dog.
If you want someone who is content to get up on your bed just to warm your feet and whom you can push off if he snores
Buy a dog.
If you want someone who never criticises what you do, doesn't care if you are pretty or ugly, fat or thin , young or old, who acts as if every word you say is especially worthy of listening to, and loves you unconditionally, perpetually
Buy a dog.
But, on the other hand, If you want someone who will never come when you call, ignores you totally when you come home, leaves hair all over the place, walks all over you, runs around all night and only comes home to eat and sleep, and acts as if your entire existence is solely to ensure his happiness...
Then.................
Buy a cat...