The object variable on the top right shows how many objects/clones, there are in the project. Use the sliders on the top left to change the types. block 2 is dirt, block 1 is grass, animal 1 is cat, animal 2 is dog. You can delete by pressing x when mouse is touch block/animal.
Art and code by me. Try These! https://scratch.mit.edu/projects/745359832
