Step 15: Use the arc on the top, right side of the head as a guide to draw the xolo dog's first ear. Follow the basic path of the arc but make the shape of the ear thinner and wavier. Make the tip pointier too. At the bottom, draw a series of lines for the creases. Add a few more lines inside the shape, on the sides, for the inner structure. Draw a few more lines at the bottom for the curved cartilage structure.
Step 16: Use the arc on the left as a guide to draw the other ear the same way. Follow the path of the arc but make the shape of the ear wavier, thinner and pointier at the top. Add a few short, curved lines at the bottom for detail but not as much as the other because the xoloitzcuintle's head is blocking it. Add a few more lines along the sides of the ear for more structure.
Step 17: Draw a series of short strokes along the top edge of the big circle for the bit of hair on the dog's head. Use the initial circle as a guide to draw the rest of the head. Darken the lower, right edge of the initial circle for the jaw. Draw the lines around the eye on the left farther inside the initial circle to make the xoloitzcuintle's head thinner. Draw a series of short lines on the forehead for the patch of short fur found there. Some xolo dogs are completely hairless, including this patch on the forehead, so you can omit this if you'd like. Add a few more lines inside the head to emphasize the bone and muscle structure.
Step 18: Use the second line from the left as a guide to draw the first front leg. Follow the path of the guide and lightly sketch the shape of the dog's leg around it. Make the base of the leg at the top wide and the rest of the leg skinny. Keep the edges of the leg close to the guide line to maintain a skinny shape throughout. When you get the shape of the leg right, darken the lines. At the bottom, curve the shape to the left to create the xolo's paw. On the left side of the paw, draw a couple of short, curved lines for the toes. On the tip of each toe, draw a tiny triangular shape for the nails.
Step 19: Use the line on the left as a guide to draw the other front leg the same way. Draw the shape of the leg around the guide. Sketch lightly at first. Keep the edges of the leg close to the guide lines to maintain a skinny shape. When you get the shape right, darken the lines. The top of this leg isn't as wide as the first leg. Curve the bottom part of the shape to the left to create the paw. Add a curved line on the right side for the joint. On the tip of the paw, draw short, curved lines for the xolo dog's toes. On the tip of each toe, draw a tiny triangular shape for the nails.