After you're introduced to the various Flanimals, there's a chapter about Flanimal Behavior and then Flanimal Testing, which is a test about all the creatures in the book. (My son passed the test; I failed miserably.)
I love this book and think it's super cute, but probably more for older children. My son thinks it's "awesome" but the girl didn't quite get the nonsensical nature of some of the terms. She kept wanting me to explain things that are without explanation. So although she liked looking at the pictures, the joy that was to be had from the sheer silliness of it all was sort of lost on her.