Your tortoise' are gorgeous. Many years ago (abougt 40 years) our neighbors were motorcycling across the Nevada desert and found a land turtle crossing the road. They picked it up, put him in the saddlebag and brought him home. They had him for about 15 years and loved him very much. He died rather suddenly without being sick or acting sick so they did some research on turtles via local vets and the zoo. Apparently they suspect the bagged lettuce they fed him MIGHT have had a chemical used in the washing of the lettuce or ??? that had something to do with his sudden demise. They had never fed him the bagged lettuce until the last day...they had always used fresh leaf lettuce so that was the best answer for the sudden death. Just info. Don't know if it's at all valid. Enjoy your new pets. My neighbors really enjoyed their old boy. Theirs loved to have the top of his head rubbed and he liked his feet and legs gently massaged. He'd slowly follow her from room to room so she was always worried about stepping on him but they said he was a wonderful pet and they missed him when he died.