Corn snakes can reach lengths of 4 to 5.5 feet. Newly hatched corn snakes are just 8 to 12 inches in length. Babies can easily live in small snake habitats no bigger than shoe boxes, while adults need large aquariums; Reptiles Magazine recommends a minimum size of 20 gallons.
Corn snakes that are properly cared for can easily live into their late teens. Some snakes live into their 20s, and they can reproduce up until they are 10 to 12 years old.
Corn snakes in captivity are usually fed a diet of appropriately sized mice, lizards or frogs. Food can be given live, although many owners prefer to buy frozen food and thaw it before feeding.