This is a little female Nelsons Milk Snake. Beautiful bands that are wider than usual for a Nelsons milk, but ver beautiful nonetheless.  Species:   Lampropeltis Triangulum Nelsoni Common Name:   Nelson’s 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