Timber Rattlesnake Crotalus horridus RSGCN Status RSGCN RSGCN Category High Unique ID 174306 Regional Responsibility <25% Federal Status NA Global Rank G4 Taxon/SubTaxon Snakes ITIS TSN 174306 NS Unique ID ELEMENT_GLOBAL.2.100455 NS Global ID 100455 RegionalID R14