The Tawny Scrawny Lion by Kathryn Jackson

From chapters.ca:
Once there was a tawny scrawny lion who chased monkeys on Monday, kangaroos on Tuesday, zebras on Wednesday, bears on Thursday, camels on Friday, and on Saturday, elephants!

Pierre: A Cautionary Tale in Five Chapters and a Prologue by Maurice Sendak

Pierre always says, "I don't care!". He learns to, however, with a little help.