Brazilian Rainbow boas Epicrates cenchria cenchria are a medium sized boa that can reach up to 7ft, but they usually average at about 4.5- 5 ft. Boas are non poisonous constrictors.
Brazilian Rainbow boas are so called because of their distinctive iridescent sheen that you can see when their scales catch the light. This is very similar to the spectrum of colours you can see when petrol floats on water. Brazilian Rainbow boas are usually red with black markings, with the redness of the snake generally becoming more vibrant with age.
Like many snakes boas have relatively poor eyesight and rely on their sense of taste and smell to analyse their surroundings.