How do you return a cat on catz 5

When you get a cat out from the "Pick a pet" button you chose the pet you want to return.
Then your pet comes out to play next to your cats name it has a blue or a pink cat if it's Catz 5 or a dog if it's Dogz 5.
Click on that then it will tell you what it's name is, what breed it is and when it was born or adopted.
Way Below it will have an option if you want to rename it, next to it, it should have a return button, click that.
It will ask to you if you really want to return it you say yes,then they double make sure you want to, say yes again.