Milk Snake

House one adult in an enclosure of at least 90 x 45 x 45 cm (36 x 18 x 18 in); larger subspecies benefit from more floor space. A secure, tightly latching lid is non-negotiable because milk snakes are powerful, persistent escape artists. Use a burrowing-friendly substrate 5 to 8 cm deep such as aspen, cypress mulch or coconut husk (never pine or cedar, whose aromatic oils are toxic to snakes). Provide at least two snug hides (one over the warm zone, one over the cool zone), a dedicated humid hide packed with damp sphagnum moss, low branches or cork bark for enrichment, and a heavy water bowl large enough for the snake to soak in.

Staple is appropriately sized frozen-thawed rodents (mice, graduating to small rats for large subspecies). Offer prey roughly the same width as the snake's body at its mid-point. Feed hatchlings a pinky every 5 to 7 days; feed adults an adult mouse every 7 to 10 days (err toward every 10 to 14 days for less active or overweight adults to prevent obesity). A whole-prey diet is nutritionally complete, so no vitamin or calcium supplements are normally required. AVOID: live rodents (they can bite and seriously injure or scar the snake), prey that is too large (causes regurgitation), and any human food, insects or vegetables, which are inappropriate for this carnivore. Always provide fresh, clean water.

Provide a clear thermal gradient. Basking spot: 29 to 32 C (about 85 to 90 F) measured at the surface directly under the heat source; warm-side ambient can sit a little cooler. Cool end / ambient: 21 to 24 C (70 to 75 F). Night: a natural drop to 18 to 22 C is healthy and desirable; only add gentle thermostat-controlled heat if the room falls below about 18 C. ALL heat sources (basking bulb, ceramic heat emitter or under-tank mat) MUST run through a thermostat to prevent lethal burns and overheating. Humidity: 40 to 60%, raised to around 65 to 70% during a shed cycle. Lighting: milk snakes survive without UVB but do measurably better with it. They are a Ferguson Zone 1 (shade-dwelling) species; offer low-to-moderate UVB from a forest/shade-dweller 5 to 6% T5 HO tube spanning about half the enclosure, positioned to give a basking UVI of roughly 1.0 to 3.0, on a 10 to 12 hour day cycle, and replace the tube roughly every 12 months (or per the manufacturer). Verify every temperature with a digital probe thermometer, not a stick-on dial, and ideally check UVI with a Solarmeter.

Strictly solitary. Milk snakes are opportunistically ophiophagous (like other kingsnakes, they will eat other snakes), so cage-mates risk cannibalism, stress, disease transfer and competition-related refusal to feed. Never cohabit, even briefly, except for supervised, deliberate breeding introductions by an experienced keeper. There is no social or bonding benefit to housing two together. Sexing is done by an experienced keeper or vet via probing or popping, not by colour or size.

A deep, burrowable substrate is the single most important enrichment for this secretive, semi-fossorial species, letting it dig, hide and thermoregulate naturally. Add multiple hides at different temperatures, cork bark tunnels and low sturdy branches to climb and explore. Rotate novel scents and rearrange furniture periodically, provide a warm soak option, and use varied hide positions so the snake works to find its preferred microclimate. Calm, occasional, supportive handling once the animal is settled also provides gentle stimulation.