Size wise, I weighed and measured 8 of them at 8 days old, and they were all between 32 and 36 cm long (around 13 or 14 inches) and between 10 and 11 gms (less than 1/2 ounce). It's hard to believe such tiny snake are boas, but when you see them grapple with (equally tiny) geckos, they are all constrictor!