Although reasonably easy to care for, sugar gliders require more time than most small caged mammals, and have some specialized needs. Before deciding to become a sugar glider owner, be sure you have the commitment and time your new pet needs. Sugar gliders are extremely social animals. In the wild, they live in large family groups, called colonies. Because of their social nature, pet gliders should always be kept in pairs or small groups. No matter how much time you plan to spend with your pet, you cannot replace the companionship of another glider. It is unnatural for a glider to ever be alone, and unfair to force solitude upon your pet. When housed alone, gliders are likely to become depressed, withdrawn, even defensive, and may refuse to eat and could eventually die from loneliness! If you aren't interested in breeding, same sex groups are able to get along. If keeping males together, they should be litter-mates or introduced at a young age.
from sugarglider.com
