Petting Zoo by Christoph Niemann is a fun little interactive picture book for iPhone and iPad. Each page of the book features hand-drawn animations that interact with your touch.
The first page begins with a pencil drawing a hat that has a rabbit come out of it. Though you can't tell visually, the rabbit is pinned by its ears and feet, so when you swipe up, down, left, and right, the rabbit's body will stretch over in the respective direction Tapping him once will stretch him backwards and then bounce forward. The animations are great, especially considering they were hand-drawn.
When you advance to the next page, the rabbit morphs into a dog house and a long, skinny dachshund walks out of it. Using gestures, you can tie him in a knot and even make him breakdance.
As you turn the pages, the drawings morph from one zoo animal to another. There are 21 different animals and all of them respond to your touch.
Petting Zoo is an awesome kids book that even parents will enjoy. My two-year-old daughter thinks it's hilariously fun.
$1.99 - Download now