1. Both terrestrial and arboreal snake of United States southwest
   - Masticophis bilineatus

Type of: whip snake, whipsnake, whip-snake

• genus Scincus
• genus Scindapsus
• genus Scirpus
• genus Sciurus
• genus Scleranthus
• genus Scleroderma
• genus Scleropages
• genus Sclerotinia
• genus Sclerotium
• genus Scolopax
• genus Scolopendrium
• genus Scolymus
• genus Scolytus
• genus Scomber
• genus Scomberesox
• genus Scomberomorus
• genus Scombresox
• genus Scophthalmus
• genus Scopolia
• genus Scorpaena
• genus Scorzonera
• genus Scrophularia
• genus Scutellaria
• genus Scutigera
• genus Scutigerella