This is a funny book, like Runaway Bunny where the picture are all back and white on one set of pages and in color (mostly bright pink, yellow and navy-ish blue) on the next set of pages. It tells the story of a scottie dog (Angus) and how he finds himself living with a Cat who is allowed to do all the things that he is not allowed to do; and how he wants the Cat to go away, except that when the Cat hides and he thinks she's gone, he really misses her, and is then glad when she comes back. Liam especially likes the parts where Angus chases a frog and where the Cat hides on the roof.
It's funny to see how directly the stories influence his play life. He is all of a sudden very interested in playing hide and seek and peek-a-boo again and I can only think that spending all weekend talking about how the Cat hides on the roof and Angus looks all over for her has something to do with it.