The first edition of Cats has the letters ABCDEF on page 160. Copyright © 1973 by Western Publishing Company, Inc. Published by Golden Press, New York, N.Y. Cover price is $1.95. The number on the spine is 24356. Listed as a Golden Guide on the cover. But the inside front cover lists it as a Golden Nature Guide.
This title also exists in a large (5 ¼ by 7 ¾ inch) hardcover. The number on the back cover is 64356.
A French version of Cats is titled chats et féline. © 1973 by Western Publishing Company, Inc. Publié par les Editions des Deux Coqs d'Or, Paris, 1975. From the last page: Imprimé en Italie- Interlithio Milan. Part of the Le Petit Guide series. (image #2)
No American cover variant or revised edition exists. Out of print.