[1]The giant pill millipede is found in moist forest habitat under leaf litter in South Africa.

It is widely distributed in high-altitude forested areas in Kwa-Zulu Natal, Limpopo, Mpumalanga and the Eastern Cape.

[1] The giant pill millipede feeds on decaying matter on the forest floor.

The carnivorous slug, Chlamydephorus, is known to prey on S. giganteum in the coastal forests of KZN.

Sphaerotherium giganteum may be vulnerable to habitat loss and degradation, as well as exploitation in the pet trade and in traditional medicine.