Lyle the crocodile becomes so jealous of Joshua's birthday party and presents that it makes him feel ill, and he ends up in the hospital, where he recovers his good nature by entertaining the children there.
Bernard Waber (September 27, 1921–May 16, 2013) was an American children's author most famous for the books The House on East 88th Street (1962), Lyle, Lyle, Crocodile (1965) and the subsequent books in the Lyle series.
