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A boa’s small cloacal spurs on the sides of its vent (anus) are actually connected to said vestigial limbs!īoa constrictors have distinctive and varied markings. They have vestigial remnants of the pelvis and hind limbs of their lizard-like predecessors. Boa Constrictor Appearanceīoas are primitive snakes, just like pythons. In fact, the oldest recorded boa lived to be just over forty-three and lived at the Philadelphia Zoological Gardens. It’s quite normal for a boa constrictor to live for twenty to thirty years or more. Boa Constrictor Lifespanīoa constrictors are among the longest-lived snake species in the world. The largest boa constrictor on record is believed to have been 14 feet in length. Most captive-bred boa constrictors do not exceed a weight of 60 pounds, with most subspecies topping out at around 30 pounds. Male boa constrictors tend to be a little smaller than females. The average adult size ranges from 4 to 7 feet in length, with some individuals occasionally reaching 8 or 9 feet in length. Newborn boa constrictors range in length between 14 and 22 inches and weigh just 2 to 3 ounces. Boa Constrictor Sizeīoas are one of the few snakes that produce live births, versus eggs that need to be incubated.

There are six subspecies currently recognized by all herpetologists, including the Common Boa Constrictor, Red-Tailed Boa Constrictor, Clouded Boa Constrictor, San Lucia Boa Constrictor, Short-Tailed Boa Constrictor, and Argentine Boa Constrictor.

This is one of the few instances where an animal’s scientific name is the same as its common name.