The premier mimic of the Colubrid family is the Hognosed Snake. Then feigns its own death. A couple of other character actors add color to the Colubrid repertoire. The Long-nosed Snake of the Southwestern U.S. first tries to hide its head and coil its body, then rattles its tail, and finally, discharges a bloody fluid from its vent. The Red-bellied Snake which is found living under debris around homes in the Eastern U.S., curls up one or both its upper lips in a silent snarl when threatened.
Colubrids are even engineers of sorts.
The Rough and Smooth Green Snakes both use a structural design discovered considerably later in evolutionary history by humans. Green Snakes, attempting to bridge a gap between two branches, run into the same problem faced by human builders who need to span a gap between roof supports. In its usual shape, a snakes body, like a flat piece of steel, has limited rigidity, and the distance across which it can support its own weight is also limited. Green snakes were doing the same thing with their bodies millions of years earlier, flattening belly and back and sucking in their sides to form a rough equivalent of an I-beam.