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Animal and Plant Health Inspection Service
U.S. Department of Agriculture

Chemical Effects Database


Online Chemical Effects Database Now Available


drawing of strychnine During the mid-1900s, numerous chemicals were evaluated for their potential use in preventing wildlife damage to agriculture, property and natural resources. These historical studies provide valuable information for today's experts involved in environmental risk management and the development of safe, effective and socially responsible damage management tools.

The National Wildlife Research Center “Chemical Effects Database” contains approximately 11,000 published bioassay records and data for over 2,000 chemicals analyzed and evaluated for toxicity to animals and plants, repellency, immobilization, and reproductive inhibition. Studies were conducted from 1943 to 1987 by the U.S. Department of Agriculture's Denver Wildlife Research Center, its predecessor the Denver Wildlife Research Laboratory, and by the U.S. Geological Survey's Patuxent Wildlife Research Center (formerly part of the U.S. Fish and Wildlife Service). The database may be searched by species, chemical and other parameters. These data are of particular interest to risk assessors and research scientists studying chemical impacts on wildlife and plants.

To access the database, click here.

The database is one of many sources available through the USGS Whole Wildlife Toxicology Catalog.

For more information, please contact


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