Adults are uniformly black, both dorsally and ventrally.

[2] B. maculata can be found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay.

[2] B. maculata is found in a variety of habitats including forest, savanna, shrubland, and desert.

[1] B. maculata preys predominately upon snakes, but also upon fishes, lizards, birds, and small mammals.

[1][2] B. maculata is rear-fanged (opisthoglyphous), and it possesses a venom which is potentially dangerous to humans, especially children.