In addition to the minimum size, there are a few other things to keep in mind when choosing a cage for your Russian tortoise.
* The cage should be made of a strong material that your tortoise cannot chew through. Some good choices include wood, plastic, or metal.
* The cage should have a secure lid that your tortoise cannot escape from.
* The cage should have good ventilation to prevent the air from becoming stagnant.
* The cage should be easy to clean.
If you are not sure what type of cage to choose, you can always ask your veterinarian for recommendations.