Biological International is a family-owned Salvadoran distributor of animal health and pet products, founded in 1993 by Oscar Henríquez and Sandra de Henríquez. Guided by the Henríquez family, the company focuses on offering carefully selected, high-quality products and personalized service to retailers and animal-care businesses across El Salvador. Its portfolio includes food, medicines, and supplements for pets and other animals. In 2022, Biological introduced its own supplement line for cattle, pigs, and poultry, and in 2023 expanded its portfolio with a new line of medicines as part of a brand refresh focused on animal health distribution.

Beyond supplying products, Biological supports customers with product assessments tailored to their type of business, ongoing commercial guidance, and personalized training and advice. The company serves pet stores, veterinary practices, agro-supply businesses, farms, and corporate clients. Biological positions itself as a strategic partner, combining product selection with practical assistance to help customers meet their needs.