Charles River Laboratories International, Inc. is an American pharmaceutical company specializing in preclinical and clinical laboratory, gene therapy and cell therapy services and supplies for the pharmaceutical, medical device and biotechnology industries. The company has over 150 facilities, operates in 21 countries, and employs over 21,000 people worldwide. Charles River Laboratories frequently criticized by animal rights activists, who condemn the company's use of dogs and primates for pharmaceutical research. The company is also a major harvester of blood from horseshoe crabs. Wikipedia