Professor Wormbog has collected a Kerploppus, an Ickky, a Murgatroy, and a Useless. He has every beastie from A to Y, but he doesn't have a Zipperump-a-Zoo. He looks underground, in the sea, and in the air, and discovers how hard it is to find one — unless the Zipperump-a-Zoo wants to find you! Mercer Mayer creates a world of silly creatures filled with humor for adults and children alike.

This edition, published in 1976 is difficult to find in decent condition. Some bumping at the tips, wear to the top of the spine, and a tear on page one, repaired with tape. Interior is clean and free from marks.