EXHIBIT 21
 
LIST OF SUBSIDIARIES
 
The following table sets forth certain information concerning the principal subsidiaries of the Company.
 
Name
     
State or Other Jurisdiction of Incorporation
All-Glass Aquarium Co., Inc.
     
Wisconsin
Four Paws Products, Ltd.
     
New York
Kaytee Products Incorporated
     
Wisconsin
Norcal Pottery Products, Inc.
     
California
Pennington Seed, Inc. of Delaware
     
Delaware
TFH Publications, Inc.
     
Delaware
Wellmark International
     
California
 
The names of certain subsidiaries have been omitted because such unnamed subsidiaries, considered in the aggregate, would not constitute a significant subsidiary as that term is defined in Regulation S-X.