I have 1.2 savu pythons. The male is two years old and still tiny enough that he fits in the same hatchling rack I use for my ball pythons. They are very nippy as babies but for the most part have settled down. Temperment-wise they remind me of a very defensive retic; fortunately they have tiny teeth.

Tarahumara boa females top out at five feet, males at 4-4.5 feet. They were also defensive as youngsters but have mellowed with age and consistent handling.