I have been baby sitting two Sulcata tortoises for about a year and a half. Based on a little internet researching over the last few days it looks like I have not been feeding them very well. I give them Lots of escarole, some endive, dandelion greens, Romaine, Banana, Squash, Cactus (prickly pear), a little fruit like watermelon, apples, and peaches. They are sorely lacking the grasses they apparently need; so I need to work on that. They are about 14 to 15 inches long (shell only). I am going to look this evening and see if I can identify gender but based on something my son and I saw a few months ago we are pretty sure at least one of them is a male (and a very lucky male at that). They have both dug their own burrows and will not go into the others. It looks like bottom of the burrows go at least a few feet deep and I can only guess they are at least five to eight feet long. Does anyone know how long and deep I can expect the holes to get?