The Northern Pacific Rattlesnake (Crotalus oreganus oreganus) is a pit viper with 7 other subspecies of pit viper found here in North America. The others that are related are:
Grand Canyon Rattlesnake (Crotalus oreganus abyssus)
Coronado Island Rattlesnake (Crotalus oreganus caliginis)
Arizona Black Rattlesnake (Crotalus oreganus cerberus)
Midget Faded Rattlesnake (Crotalus oreganus concolor)
Southern Pacific Rattlesnake (Crotalus oreganus helleri)
Great Basin Rattlesnake (Crotalus oreganus lutosus)
Northern Pacific Rattlesnake (Crotalus oreganus oreganus)
This family of rattlesnake can be found from British Columbia, Canada in the north, to New Mexico and through out the American southwest.
None are endangered.
Zoos where they can be seen are:
Pacific region
Woodland Park Zoo Seattle, Washington
California Living Museum Bakersfield, California
California Living Museum Bakersfield, California also features the Southern Pacific Rattlesnake (Crotalus oreganus helleri)
Sacramento Zoo Sacramento, California
Mountain region
Heritage Park Zoo Prescott, Arizona features the Arizona Black Rattlesnake (Crotalus oreganus cerberus)
The American International Rattlesnake Museum Albuquerque, New Mexico features the Arizona Black Rattlesnake (Crotalus oreganus cerberus)
Central region
St. Louis Zoo St. Louis, Missouri features the Grand Canyon Rattlesnake (Crotalus oreganus abyssus)
Eastern region
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