Have you ever been developing in wordpress and did not found the featured image box ? Sure you have missed adding the support to post thumbnails, just check that this line is present in your functions.php add_theme_support( 'post-thumbnails' );
Tag: thumbnail
How to get featured image "thumbnail" for a post? $feat_image = wp_get_attachment_url( get_post_thumbnail_id($post->ID) ); echo '$feat_image';