Gerbils have an extremely strong burrowing instinct. In the wild, they create intricate tunnel networks in order to escape the heat of the day and the chill of the night, and to avoid predators too. Tunnels help them feel safe and secure, even in a home setting that lacks the external pressure of harsh elements and carnivores!.
Gerbils and tunnels are a marriage made in heaven - or in a well-stocked pet store, at least!
Gerbil tunnels make a fun addition to the burrows and tunnels your pets will make in their bedding. They are not substitutes for the bedding material, though, just a lot of fun to stimulate mind and body.