It is great place for small animals to live and play games, suitable for hamsters, mice and other small hairy animals. A healthy way to relieve the anxiety and stress of your small pets, prevent them from chewing their cages or other furniture. Relieve boring and improve the level of activity, good for increasing the health of pets. A fun and innovative toy, allows pets to grind, which is conducive to keep the pets mental health. Made of natural wood material, safe, wear resistant, durable for long term use.