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Poisonous animals
 
Cnidarians (Jellyfish, Corals and Anemones)
 
Venomous fish
 
Scorpions
 
Spiders
 
Hymenopterans (Bees, Wasps and Ants)
 
Sea snakes
 
Terrestrial snakes
 
Miscellaneous animals
 
North America
 
Mexico and Central America
 
South America and the West Indies
 
Europe
 
North Africa, Near and Middle East
 
Central and Southern Africa
 
The Far East
 
Indian Subcontinent and Southeast Asia
 
Australia and the Pacific Islands
 
 
 
 
 
 
 
 

Find terrestrial venomous snake by morphology (regional)

Select the snake family or subfamily and your current world region. If you don't know the family/subfamily, go to the "Find terrestrial snake by morphology (general)" page and follow the instructions.

Selection

 
Elapids Pit Vipers

Morphological identification key

 

 

 Crotalinae
      
             

Is there a "rattle" or a knob-like projection on the end of the tail?

yes
 

Are there several enlarged shields on the top of the head (generally 9, sometimes 11)?

yes
 

Sistrurus spp.,

Crotalus ravus

 no      no      
                   
        

Crotalus sp. (excluding Crotalus ravus)

       
         
           

Are there several enlarged shields on the top of the head (generally 9)?

 

yes 
      
  Agkistrodon sp.