"The Colonial Spanish Mustang: The Forgotten Horses" documentary explores various strains of the Colonial Spanish Mustang, "American's 1st Horse", and was created to bring public awareness of this dying breed and give them an understanding of the significant benefits of this type of horse. This documentary includes interviews with various mustang conservationists in the United States. The Colonial Spanish Mustangs breeds are endangered for many reasons, including habitat destruction. It is important for the history and heritage that these horses be saved.