The Colubridae are a complex group and tend to come in all shapes, sizes and colours. All lack a pelvic girdle, a functional left lung and a coronoid bone. There are nine subfamilies:
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The Colubridae are a complex group and tend to come in all shapes, sizes and colours. Many of the small pet snakes are colubrids (pertaining to Colubridae). Some are rear-fanged with a potent venom; all lack a pelvic girdle, a functional left lung and a coronoid bone. Their distribution is worldwide.