Step 10: Draw a series of tiny dots inside the ferret's muzzle as the base for the whiskers. Using quick, long strokes, draw the whiskers where you drew the dots.

Step 11: Draw the ears inside the head on the top. First lightly sketch two arcs at the top using the edges of the main circle as a guide. When you have the shape of the ferret's ears right, darken the lines. Draw a few quick, short strokes at the base of the ears for fur.

Step 12: Use the main circle as a guide to draw the rest of the ferret's head. Draw the top of the head by using quick, short strokes as you follow the path of the circle. The bottom part of the head or jaw is farther from the bottom edge of the main circle.

Step 13: Using the lines as guides, draw the ferret's front legs. Sketch lightly at first as you follow the basic path of the guide line. Notice the top of the ferret's leg is thick and gets thinner at the bottom. Darken the first leg using quick, short strokes to represent fur. Draw the small paw at the bottom too. Draw the leg on the other side the same way. Sketch it out lightly first to get the structure right. Then darken the shape using quick, short strokes and draw the paw at the end.

Step 14: Use the line on the left as guides to draw the hind legs the same way as the front legs. The top part of the leg is big and round. Follow the basic path of the guide line and lightly sketch the ferret's foot. Darken the foot once you get the structure right and draw the paw at the end of it. Draw the leg on the other side the same way. Part of it is hidden by the leg in the front, so only draw the visible portion.

Step 15: Darken the remaining lines to complete the rest of the ferret's body. Use quick, short strokes as you follow the path of the lines to create a furry texture.