U.S. Fish and Wildlife Service Northeast Region - Don't get shook from this snake's shake. When threatened, black rat snakes will mimic venomous snakes by “rattling” their tail. Reaching 8ft in length,
Fact, this snake, be it king snake or black snake, whatever, rattles it's tail like a rattlesnake to fend off predators, the rapid movement of the tail in leaves mimics the sound. :
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Caught this big boi, rat or king snake? Had the false rattle tail. I think rat. : r/snakes
Western Ratsnake | Missouri Department of Conservation