On Friday i placed my 3yo sulcata tortoise out in my fenced back yard. The yard is not secured for her to remain outdoors 24/7 so we just have her out during the day for exercise, sun and grazing. We were outside for about 4 hours before we started to look for her to bring her back inside with us. She is nowhere to be found. We searched every corner and border of the yard for a place she would have dug out of and there is nowhere. There is only one place she could have left from and that is the gate. It isn't impossible that my children left the gate open on accident. I just think that would have been a very small window of opportunity. I'm very worried about her and I have circled the blocks on both sides of me to inform them of her disappearance and posted to our community facebook page. Today I contacted all the reptile stores around me to let them know and to keep a look out for anyone who might bring her in. I have a posting on craigslist and I have called out animal and reptile shelters. I don't know what to do. What are the chances of her coming back? Are they anything like dogs and have a sense of home??? It's summer here in colorado now, so it is warm enough for her to survive the night... But I live in an underdeveloped area and we have a lot of predators. I'm so worried.