S/he is a Spur Thighed Tortoise, and as of now I can't tell whether it's a boy or a girl so I named him Tory The Tiny Tortoise.
I left Tory in the yard. When I cam back an hour later he was gone. I looked, Mom looked. And we couldn't find him :(
Then yesterday I looked out my window and saw him! I rushed down stairs to greet him. So apparently Tory didn't leave; he's just good at being invisible ;)