Brazilian rainbow boa
This soft-skinned boa has beautiful, iridescent skin. Tiny ridges on the scales act as prisms to refract light and create a rainbow-colored effect. Brazilian rainbow boas are brown or reddish brown snakes with three parallel black stripes on the top of the head and large black rings down the back that give the appearance of dorsal blotches. The round lateral blotches are black with an orange or reddish crescent across the top. There is a great deal of variation in color and marking among this species. Adult males have substantially larger spurs along the side of the vent and have noticeably thicker bases of their tails due to the internal hemipenes, their sexual organs. invaginated hemipenes.
Brazilian rainbow boas are a medium sized, round-bodied terrestrial boa and range from 4 to 6 feet (1.2 to 1.8 meters) in length. The head is not particularly large, but it is distinctly wider than the neck.
The Brazilian rainbow boa is found in the Amazon River basin, coastal Guyana, French Guiana, Suriname and southern Venezuela. A primarily terrestrial boa, the Brazilian rainbow boa lives in humid woodland forests and can sometimes be found in open savannas.
In the wild, their diet consists of rodents, birds and possibly some forms of aquatic life and lizards. Like other boas, the Brazilian rainbow boa is non-venomous. To capture and consume meals, they ambush and constrict their prey. At the Smithsonian’s National Zoo, they are fed rats.
Reproduction and Development
Sexual maturity in Brazilian rainbow boas is determined by length rather than age. Males may breed at 4 feet (1.2 meters) and females at 4.5 feet (1.4 meters); they usually reach these sizes between 2.5 to 4 years of age. Gestation lasts about five months. A typical litter contains 12 to 25 babies. Baby Brazilian rainbows live in litters of two to 35. The babies are usually 15 to 20 inches (38 to 50 centimeters) long. Yearlings often grow to 36 to 40 inches (91 to 101 centimeters). Females eat more and grow larger than males.
They may live up to 20 years in human care.
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