When bathing a pet hedgehog, you should use a shallow dish or sink filled with warm water that is no deeper than the hedgehog's belly. You can add a small amount of gentle, pet-safe shampoo to the water if needed. Gently place the hedgehog in the water and use your hands to carefully wet its quills and fur, avoiding the face and ears. Rinse thoroughly with clean water and then gently towel dry the hedgehog or let it air dry in a warm area. It's important to ensure the hedgehog does not get cold during or after the bath. Be sure to only bathe your hedgehog when necessary, as they do not require frequent baths.