Amazon Basin Boa Boa constrictor spp. There are currently 10
subspecies of Boa constrictor, but only two of them are
generally referred to as red-tailed boas: Boa constrictor
constrictor and Boa constrictor imperator. Both exhibit redder
tails than their bodies, but the former is almost always a more
vibrant red. Boa constrictor constrictor is the species most
herpetologists refer to as a “true red-tailed boas,” while the
later is what is most commonly available under the name “red-
tailed boa”. Red-tailed boas, as the name implies are best
identified by their deep red tail, which is at the end of an
otherwise mostly redless body. They have a relatively flat,
elongated triangular-shaped head, muscular body and pronounced
eyelashes. They are generally cream, tan or grey with triangular
or semi-geometrical blotches of rust, brown, or black.
Frequently there are highlights of yellow spots or lines. Red-
tails are the largest of the boas; occasionally reaching lengths
of over ten feet (3+ meters), but seven to eigh