A modern technique for neutering sugar gliders is to use a hand-held fiber optic laser surgical tool. The light energy burns away the tissue effectively cauterizing it as it goes. There is no need for stitches, no bleeding and no residual pain or healing issues.
Veterinarian Sources
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Morges, M.A. "A novel technique for orchiectomy and scrotal ablation in the sugar glider (Petaurus breviceps)"