Wow, that's just beautiful jamie! So what exactly IS it? (i've been painfully aware in the last couple of days that I don't have any boas )
That would be a Hog Island Boa. In my opinion one of the most beautiful Boas and a great choice for someone who wants to start out with a smaller size Boa. They grow to 4-6 Ft and stay much thinner than other members of the BCI subspecies. Their color changes at different times of the day. Great temperaments and voracious feeders! If you ever get one, make sure you go for a pure Hog Island. Lots of people cross them with regular RTBs and the outcome is muddy and kind of ugly. There are nice speckled ones and ones with reduced patterns out there. There aren't a ton of people breeding them right now and they have smaller litters than other larger boas so the price has stayed pretty stable. They can be found for anywhere from $200-$500 for pure hogs. Hope that sums it up for you and anyone who might have an interest in these awesome snakes!!