Botflies are a type of parasitic fly belonging to the family Oestridae. They are known for their unique life cycle, where the larvae develop inside the bodies of mammals, including humans, dogs, and cats. The adult botfly lays its eggs on the host's skin or in the environment, and the larvae enter the host's body, causing discomfort and potential health issues. These flies are primarily found in tropical and subtropical regions, with some species prevalent in North America and South America. While botfly infestations can be concerning, they are usually treatable with proper veterinary or medical care.