I Took My Frog to the Library by Eric A. Kimmel, illustrated by Blanche Sims

From chapters.ca:
When Bridgett brings her pets to the library, the hyena laughs so loudly nobody can hear the story, the giraffe tries to read over everybody's shoulder, and the frog jumps onto the checkout desk, scaring the librarian. But it's the well-behaved elephant who causes the biggest problems of all!