Pituophis

• Bull Snake  - Contains information on physical features. With photos and links.
• DesertUSA Gopher Snake Genus Pituophis  - Contains information on range, habitat, physical features, behavior, life cycle and current status. With pictures and online references.
• EnchantedLearning.com Bull Snake  - Features anatomy, hunting, diet, predators, habitat, reproduction and classification. With pictures and links.
• Gopher Snake  - Contains introductory information. With links to related sites.
• Pine Snake Pituophis melanoleucus  - Provides information on distinguishing features. With photos, maps and links.