Feet and Puppies, Thieves and Guppies: What Are Irregular Plurals? (Words Are CATegorical)
(Words are CATegorical #7)
written by Brian P. Cleary with illustrations by Brian Gable

• Publication Date: January 1, 2014
• Genres: Children's 7-11, Picture
• Paperback: 32 pages
• Publisher: Millbrook Pr Trade
• ISBN-10: 1467726273
• ISBN-13: 9781467726276