For many small animals, nests serve as dens to sleep or play in, and not just breeding areas. Its important that the animals feel comfortable: the nest needs to be dark and warm, with natural nesting materials. The 4 entrances to the grass nest remind your pet of lots of burrows, like in nature. Size: Diameter 16 cm, suitable e.g. for rats and squirrels The nests are made of natural, dried grass