Back when I was a kid, and was a gas jockey, my boss, who owned a Texaco station, had a 6' (or so) Boa Constrictor that he kept in a glass aquarium in the front of the shop. I use to put him around my neck and walk outside to pump gas. The customers use to dig it. That was 1971 or 1972. Their not much to write home about, they sleep, eat and crap. It's a little weird though to watch them unhinge their jaw and swallow a rodent whole. You can watch the "food" progress down the pipe.