We bought a young 4" RF this past saturday at a local pet store, and put it on our tortoise table with our other 2 RF's. It immediately walked all around the whole habitat exploring. The young RF ended up on the basking end where our larger 8" RF was hanging out. The 2 went face to face checking each other out. After a couple of minutes, the new young RF reached out and bit the larger tortoise on the face. Needless to say, the larger RF did not like that at all. She went into her shell for a couple of minutes while the younger one tried to climb on her back. The older one did not go for that, and started backing up and shaking her rear end so that the younger one couldn't climb on her back. I thought it was hilarious! I just hope they can get along ok later.