Actually, large adult boas come in pretty often too. We do get more that are a medium size, but large adults do come in. I'm a member of the adoption committee so I get to see a lot of them before they become available to the membership at the meetings. I don't remember seeing any Arg's recently but there have been a few dumerils over the past couple of years. Just remember that these animals were either confiscated by animal control and turned over to us or surrendered to us directly by their former owners for adoption and while most are in pretty fair condition, some do need a little extra TLC and you should ALWAYS practice good quarantine.