Agricola - Literature encompassing all aspects of agriculture and allied disciplines, including animal and veterinary sciences, entomology, plant sciences, forestry, aquaculture and fisheries, farming and farming systems, agricultural economics, extension and education, food and human nutrition, and earth and environmental sciences.
Alternatives Search Service from the UC Davis Center for Animal Alternatives
Alternatives to the Use of Live Vertebrates in Biomedical Research and Testing (ALTBIB), Toxnet, National Library of Medicine
Altweb Search Engine - Johns Hopkins Bloomberg School of Public Health global clearinghouse for information on alternatives to animal testing
AWI: Enrichment and Refinement Databases
Databases for Animal Alternatives from the Animal Welfare Information Center
ECVAM search guide - Database search guide for the untrained user, PDF free to download, 118 pages
Environmental Enrichment for Primates - Annotated Database on Environmental Enrichment and Refinement of Husbandry for Nonhuman Primates - Animal Welfare Institute
Lab Animal Refinement Database - Annotated Database on Refinement of Housing and Handling Conditions and Environmental Enrichment for Laboratory Animals from the Animal Welfare Institute.
NORINA - (Norwegian Inventory of Alternatives) - an English-language database containing information on over 3,900 audiovisual aids that may be used as alternatives or supplements to the use of animals in teaching and training, including dissection alternatives, at all levels from Junior School to University.
PubMed - National Library of Medicine
PubMedCentral - free full-text archive of biomedical and life sciences journal literature at the US National Institutes of Health Library of Medicine (free access)
TextBase - A database of books within Laboratory Animal Science