Thamnophis marcianus

A well-sealed terrarium (a good escape artist)

Hides on both sides, branches, and a water body large enough for bathing.

Moderate; raise it during shedding.

Optional; low-level UVB is beneficial (a diurnal species).

A large bowl of clean water at all times; the species bathes and drinks regularly.

Southwestern United States, Mexico and Central America — grasslands, semi-deserts and the margins of water bodies.

Varied carnivore — Earthworms, fish (thiaminase-free) and appropriately sized pinkie mice

Avoid raw fish high in thiaminase (vitamin B1 deficiency). A varied diet; feed juveniles every 4-5 days, adults every 5-7 days.

Gestation follows a period of winter cooling; young are independent at birth.

• Respiratory infections (too cold/damp)
• Internal parasites (common with a fish/worm diet)
• Thiamine deficiency (raw fish high in thiaminase)
• Obesity
• Incomplete shed