As every reader who has met Lyle knows, he is the world's most lovable, sweet-natured, helpful, and generous crocodile. What readers will not know until they read this book is the change that took place in Lyle during the preparations for Joshua's birthday party: when, suddenly, like storm clouds coming down on a lovely day, Lyle was jealous, mean green jealous.

What happened after that leads to some of Lyle's most hilarious adventures to date. For an idea of them, just imagine a large green patient (one who is green by nature) being admitted to the children's ward in a hospital. Then imagine Lyle's penchant for action, and the confusion of the unexpected in a large institution, and Bernie Waber's genius for marvelously expressive illustrations. Put them all together with a birthday party, and you have one of the funniest books in many a year.