Corn snake · Daily diet

What should I feed a corn snake?

Appropriately sized dead mice as the staple, with occasional suitable reviewed prey variety.

Prey size, clean thawing, body condition, and quiet digestion matter more than adding unnecessary supplements or frequent menu changes.

Use the practical checks

Put it into practice

The useful checks

Do this

Use the exact species diet and a reviewed supplement plan.
Remove spoilable food and uneaten insects promptly.
Keep fresh water and monitor corn snake behavior every day.
Record changes so a reptile veterinarian receives useful evidence.

Avoid this

Do not make one treat or feeder the entire diet.
Do not combine supplements without checking the instructions.
Do not copy another reptile species' setup.
Do not treat a persistent health change as a shopping problem.

Choose the staple safely

For a corn snake, build meals around appropriately sized, safely thawed dead mice offered with long feeding tongs inside the secure enclosure. RSPCA guidance uses mice as the staple, sized slightly wider than the snake's widest point, with occasional suitable prey variety.

Buy frozen prey from a reputable specialist, store it separately from human food, thaw it fully in a designated container, and never use a microwave. Dead prey avoids the preventable bites and wounds that live rodents can cause.

Present the meal cleanly

Use long tongs inside the secure enclosure and keep loose substrate away from the feeding surface. Monitor the swallow, remove rejected prey promptly, and restore quiet cover without handling the snake.

Wash hands after touching prey and before handling enclosure locks or water equipment. Keep prey containers, tongs, disinfectant, and reptile dishes away from human food-preparation areas.

Read appetite with the records

Track weight, body condition, droppings, feeding dates, prey sizes, sheds, and any regurgitation. A skipped meal is context, not permission to keep offering larger or different prey.

Call a reptile veterinarian for refusal with weight loss, repeated regurgitation, swelling, abnormal droppings, breathing changes, mouth discharge, or weakness. Do not force-feed without veterinary direction.

Corn snake care boundaries at a glance

Adult home: Long enough for the snake to stretch fully; RSPCA example minimum 150 × 50 × 50 cm for a 150 cm adult
Warm zone: Basking zone 28–30°C (82–86°F)
Cool and night: Cool end 20–24°C (68–75°F); All visible lights off; any needed non-light heat remains thermostat controlled
Humidity: About 40–50% in the main enclosure, measured with a hygrometer, plus a clean humid hide
UVB: A measured light-to-shade gradient from UVI 1.0 at basking level to zero in shade; lower for light-sensitive morphs
Food: Appropriately sized dead mice as the staple, with occasional suitable reviewed prey variety