Step 6: Draw four lines under the body (two below each circle) as guides for the boxer's legs. Bend the lines near the middle and at the bottom to indicate where the joints and the feet will be. The guide lines for the hind legs should extend back before they angle down. Boxers are pretty tall dogs, so don't draw the guides for the legs too short. The guide line for the other hind leg should be a little shorter and less angled back.
Step 7: Draw a series of lines that connect the major shapes to form the rest of the dog's body. The two lines on the right side create the neck, and the lines in the middle make up the torso. Add a curved line on the left side of the body as a guide for the boxer's tail.
That's it for the initial sketch! From this point on, press harder with your pencil to get a more defined sketch.
Step 8: Lightly sketch the eyes inside the head as two small circles. Use the construction lines as guides for the placement of the boxer's eyes. Add the corners of the eyes and darken the lines to create the outer shape of the eyes. The basic outer shape of the eye should be wide around the middle and pointy on the sides. Kind of like a football. Draw the outer shape that surrounds the other sketched circle for the other eye as well.
Inside each eye on the top, right side, draw a tiny circle to represent glare. Near the middle of each eye, behind the tiny circles, draw a dot for the pupils. The boxer's pupils should be close to the top edge of the shape of the eyes. Shade the eyeballs except for the tiny circle. Use a value that's ligther than the pupils. Draw a few lines surrounding the outside of the dog's eyes for extra detail. Use quick, short strokes as you add the detail to emphasize the texture of the fur. Add some quick, short strokes a bit higher above the eyes for the brow.
Step 9: Lightly sketch an oval inside the small circle, near the top edge, for the boxer's nose. When you get the shape and placement right, darken the line. On either side of the oval, curve the line inward to create the nostrils. The nostrils are basically thin, vertical slits inside the nose. Add a longer vertical line that splits the nose in half. Darken the bottom of the nose and make it thinner.