The Catahoula Leopard Dog is an American dog breed named after Catahoula Parish, Louisiana. It became the state dog of Louisiana in 1979. As a working dog, Catahoulas have been bred primarily for temperament and ability rather than for appearance. As a result, the physical characteristics of Catahoulas are somewhat varied. As a result, the physical characteristics of Catahoulas are somewhat varied. Catahoulas come in many different colors including blue merle, red merle, brindle, and solid colors. Deeper colors are preferred; predominantly white coats are discouraged. Since Catahoula is a working dog, coat color is not a primary consideration. Red leopard: These are various shades of brown and tan, may also have white. Known as 'red merle' in other breeds. Deeper colors are preferred; predominantly white coats are discouraged. Since Catahoula is a working dog, coat color is not a primary consideration. Red leopard: These are various shades of brown and tan, may also have white.