Gliders have almost no fear of any land-dwelling creature because they are aboreal (tree-dwelling). Your other pets' dislike of your glider will cause you more problems than the other way around. So that they are secure and separate from other household pets like a cat or dog, gliders should always be kept in a cage, preferably on a high stand. Make sure the other pet are either in a separate room or kept at a safe distance when handling your glider outside of the cage. Never put your sugar glider in danger or put them under stress by placing them near another hostile animal.