Boas are a diverse group of both New and Old World snakes. Adult specimens of certain sand boa species attain a maximum size of only two or three feet, while the green anaconda may exceed 30 feet in length. For decades, humans have maintained these snakes in captivity, but recreating an environment where boas can thrive and even reproduce has always been a challenge for the herpetoculturalist. This text provides information specific to boas or subspecies. All major captive care considerations are addressed, allowing the boa keeper to provide for and possibly breed their captives.