|Products||Research Models, Teklad Lab Animal Diets, Bedding and Enrichment Products, Surgical Services, Genetic Testing Services, Research Model Support Services, Biological Products and Antibody Production Services, Flexible Film Isolators, Transportation Services|
|Services||Discovery services, Toxicology services, Genetic Toxicology services, Ecotoxicology services, Drug Metabolism and Pharmacokinetics, Regulatory Affairs, Consulting, Program Management, Analytical Chemistry, Chemical and Agrochemical Registration, Environmental Fate and Modeling, In Vitro Alternative Testing|
Harlan Sprague Dawley Inc. is a supplier of animals and other services to laboratories for the purpose of animal testing. It provides pre-clinical research tools and services for the pharmaceutical, biotechnology, agrochemicals, industrial chemical, and food industries.
Harlan offers products and services for the discovery and safety of new medicines and compounds, including research models and services, health monitoring reports, genetic monitoring reports, Teklad lab animal diets, bedding and enrichment products, surgical services, genetic testing services, research model support services, biological products and antibody production services, flexible film isolators, transportation services, and stock and strain elimination. It also provides contract research services, which comprise toxicology, environmental science, and regulatory services.
Harlan UK Ltd. is the British arm of Harlan Sprague Dawley Inc. It has an annual turnover of £6.6 million, according to the British Union for the Abolition of Vivisection (BUAV). The company supplies marmosets, beagles, cats, rabbits, guinea pigs, rats, mice, gerbils, and hamsters, as well as hybrid, mutant, and transgenic animals. Its brochure says it supplies more stocks and strains of lab animals than any other commercial supplier in the world. BUAV writes that the company breeds around 450 baby marmoset monkeys a year, selling them to laboratories around Europe for £1,000 each.
Harlan Laboratories says it is "dedicated to the humane care and use of research animals". The IACUC and the company's veterinary staff manage policies and procedures to ensure that all animal use is performed in accordance with government and industry standards. 
In the UK, The Sunday Times reported that beagles kept on a large farm were permitted only 20 minutes out of their cages per week because the company, "is exempt from the main animal welfare legislation which requires dogs to have daily exercise," and instead "adheres to a code of practice enforced by the Home Office." An ex-employee of Harlan told the Times that he was shown how to separate fighting dogs by "kicking and punching them." The company said they investigated the charge and found that "there were some inconsistencies between sites in the way the dogs were being separated during fighting."
Harlan has been a target of animal rights activists, and the group Animal Liberation Front has raided Harlan Interfauna removing animals and documents. For one raid in 1990, during which 82 beagles and 26 rabbits were taken, John Curtin and Danny Attwood were convicted and sentenced to nine months and 18 months in prison respectively.
- Kelso, Paul and Morris, Steven. "Haphazard army with the scent of victory", The Guardian, January 18, 2001.
- Harlan's website.
- Bloomberg Businessweek "Company Overview of Harlan Laboratories, Inc."
- "Who is Harlan UK?", British Union for the Abolition of Vivisection.
- "Animal Welfare," Harlan Laboratories, 2012.
- All animal research production sites in the U.S. are covered by a PHS Assurance and the company is fully USDA licensed. 
- Daniel Foggo and Hannah Kent-Martin, "Living conditions for lab dogs under the spotlight," The Sunday Times, 10 July 2011. (Please note that original Sunday Times article is subscription only, so this is linked to a partial reprint in the Mirror.)
- "The man, the activist", first published in Arkangel.
- Mann, Keith. From Dusk 'til Dawn: An insider's view of the growth of the Animal Liberation Movement. Puppy Pincher Press, 2007, pp. 267-275.
- Illegal Incidents, FBI.