Looks like a hypo Colombian bci (common boa). Did they sex it for you? Females will get a lot larger than males. Boas are great snakes, and a lot more fun IMO than balls, etc. Just be prepared to get a nice PVC cage for it in 2-3 years.. I will be buying my first PVC cage for my boa in a few months... Males require a 4x2, and females can need a larger 6x2 as adults. Also, there's a great book on amazon called the complete boa constrictor with great info and pics. I highly recommend it.