This is a little  male Honduran Milk Snake.  Species:   Lampropeltis Triangulum Hondurensis Common Name:   Honduran Milk Snake Care Level:    Beginner/Intermediate Lifespan:   10+ years Adult Size:   Up to 5 feet Captive Diet:   Frozen/thawed mice Adult Minimum Tank Size:   30 gallons Temperature & Humidity:   70-85 degrees