That is DEF a box turtle. you can tell by how its feet look. for one, its feet are not webbed for swimming and its head is beaked out more then just about any Aquatic turtle. Iv found these guys in my back yard before. the Ornates are usually pretty common from people who have them and put them just loose in there back yard, they move, the turtle digs under the house or under ground to hibernate and you move in and the turtle comes out in the summer and you happen to stumble on it chilling in your yard. Happens ALLLLL the time. there real cool turtles even tho they stay super small compared to even a red ear slider
Also, is that a Yorkie in the left corner?