The diet of the red-bellied snake is mostly composed of slugs, snails, earthworms, beetle larvae and other insects (2) (3) (7). Due to special adaptations of its teeth and jaws, this species is able remove snails from their shell with relative ease (7).
Female red-bellied snakes are able to store sperm for several months before fertilisation occurs (2), and usually give birth to a single litter of up to 21 live young in August or early September (2) (3). When born, the young are between six and ten centimetres long (3), and are covered by a thin membrane, which they quickly break (2).
During the winter months, the red-bellied snake undergoes a mass migration, followed by a period of hibernation. At favourable hibernation sites, such as anthills and abandoned burrows, groups of red-bellied snakes may be formed, together with other small snake species (7). Although it is diurnal in spring and autumn, the red-bellied snake is mostly nocturnal during times of hot weather (2) (7).
The red-bellied snake is prey for a wide range of species including raccoons, ground squirrels, shrews, hawks and other snakes, as well as domestic cats and dogs (7).