You can find it onto the 'buy mode'.
There are some tabs down the side of the pictures of the 'rooms'. Click on the one underneath the one already highlighted, and then go to he one with the paw print and then click the cat's symbol.
Some kids adore the idea of caring for a pretend pet. These simulation apps can be lots of fun while (at least sometimes) teaching the basics of real-world pet care. Here are some of the best pet apps for kids shared by Commonsensemedia.org.