Blue snakes aren't all that common in nature. Most cases of blue-skinned snakes are because of mutations that cause them to diversify from their species' natural color.

1. Blue Racer Snake

Scientific name: Coluber constrictor foxii Size: 90-152 centimeters Location: Illinois, Indiana, Iowa, Michigan, Ohio and Wisconsin in the United States

2. Rock Rattlesnake

Scientific name: Crotalus lepidus Size: ~81.3 centimeters Location: Arizona, southern New Mexico, southwestern Texas, northern Central Mexico

3. Eastern Indigo Snake

Scientific name: Drymarchon couperi Size: 120 - 236 centimeters Location: South Carolina, Florida, Alabama, Mississippi

4. Blue Pit Viper

Scientific name: Trimeresurus insularis Size: 120 - 150 centimeters Location: East Timor, and eastern Java, Adonara, Alor, Bali, Flores, Komodo

5. High Blue Green Tree Python

Scientific name: Morelia viridis Size: 150 - 180 centimeters Location: Indonesia, Australia, New Guinea

Are Blue and Black Snakes Venomous?

Yes, some Blue and Black Snakes are venomous like Blue Pit Viper, Blue-Lipped Sea Krait, etc.

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