Exotic Nutrition’s nest boxes are the perfect product for wildlife rehabbers and pet enthusiasts alike. The boxes are made of durable pine wood and have metal entry frames to prevent chewing. Hardware is included that allows the boxes to attach inside or outside the cage, or they can be mounted outside for wildlife. In the wild, small animals like to burrow or nest in hollowed-out areas. The boxes encourage natural instincts used in the wild, providing a safe and secure place to nest. They are available in three sizes designed to house degus, sugar gliders, flying squirrels, ground squirrels, birds and other animals. Nest boxes can help reduce stress levels and increase quality of sleep for pets.