The quickest way to make fur look flat is to color the entire animal smoothly and then add a few little hair lines on top.
Instead, think of fur as something you're building from the beginning.
Each layer of pencil can suggest groups of hairs following the shape of the animal's body. Some disappear into shadow. Others catch the light. A few individual strands become visible around the edges.
You don't need to draw every hair.
Please don't draw every hair.
The squirrel does not require that level of commitment.
Before choosing colors, study the animal.
Fur rarely travels in one direction across the entire body.
On a cat, for example, fur may:
radiate outward from the nose,
sweep backward across the cheeks,
grow upward and outward inside the ears,
curve around the chest,
follow the legs downward,
and travel along the body toward the tail.
Those directional changes help describe the animal's anatomy.
Imagine gently running your hand over the animal.
Your pencil should generally follow the same path.
One of the most useful fur strokes begins with a little pressure and finishes with almost none.
Place the pencil on the paper, make a quick stroke in the direction of the fur, and lift the pencil as you move.
The line naturally tapers.
Practice making:
short flicks,
long flicks,
curved flicks,
and overlapping flicks.
Try starting lightly too. Different fur needs different marks.
Short, dense strokes might suit a rabbit's face.
Long sweeping strokes could create a fluffy tail.
Tiny delicate strokes work around ears and muzzles.
You're building a vocabulary of fur marks.
Draw three small rectangles.
Make the first short fur using compact overlapping strokes.
Make the second long fur using longer, flowing strokes.
Make the third curly or shaggy fur using irregular curved strokes that change direction.
Use exactly the same three pencils in every box.
If the surfaces look different, you've demonstrated that fur texture comes at least as much from the stroke as from the color.
Real animal coats usually contain more colors than they initially appear to.
A brown dog may contain cream, gold, red-brown, gray, dark brown, and even hints of violet or blue in the shadows.
A gray cat may contain blue-gray, warm gray, cream, brown, and lavender.
Black fur can contain indigo, violet, charcoal, brown, and reflected colors.
White fur may contain blue, gray, cream, peach, or colors reflected from its surroundings.
Begin with light layers of these underlying colors rather than immediately reaching for the darkest fur color.
Then build progressively darker strokes over them.
The lighter colors peeking between later layers help create depth.
Don't begin by drawing thousands of individual hairs.
Establish the overall shape and value first.
Think:
Base color → broad shadows → fur direction → darker groups → selected individual hairs
The first layers can be relatively soft and loose.
As the picture develops, sharpen your pencil and add increasingly specific strokes.
Save the finest details for places where you want attention—usually around the face, eyes, ears, and illuminated edges.
This creates a much more convincing result than giving every square inch identical detail.
This is a big one.
We tend to think of fur as thousands of individual hairs.
Visually, however, we often perceive it as groups and clumps.
Look at long-haired animals especially. The coat separates into overlapping tufts, waves, and sections.
Color the larger clumps first.
Add darker areas where one clump overlaps another.
Then add only a few individual strands to suggest the finer texture.
Your viewer's brain will happily invent the remaining hairs.
Let it help.
Fur has thickness, but there's still an animal underneath it.
A furry leg should remain cylindrical.
A chest should curve.
A cheek has volume.
A tail bends through space.
Your strokes should follow those forms rather than turning the animal into a flat shag carpet.
Use darker values where the body turns away from the light and lighter values where it turns toward it.
Then let the fur strokes follow those changes.
Now you're combining form and texture.
Draw a circle.
Instead of smoothly shading it like the ball from our earlier exercises, turn it into a round furry creature—or simply a ball of fur.
Choose a light source.
Use curved groups of fur strokes that follow the sphere.
Keep the illuminated side lighter.
Build deeper color on the shadowed side.
Around the outer edge, allow a few tapered hairs to break the perfect circle.
Now compare it with a smoothly shaded sphere.
Both are round.
But only one should look as though it might shed on your furniture.
Success.
If you're coloring cream, white, pale gray, or golden fur, avoid automatically outlining every hair with dark brown or black.
That can make soft fur look wiry.
Build pale fur with subtle value changes.
Use cream, light gray, pale brown, peach, blue-gray, lavender, or other gentle colors appropriate to the lighting.
Reserve dark marks for genuine creases, deep overlaps, facial features, or the darkest areas of the coat.
Light fur still needs shadows.
It just doesn't need thousands of black hairs drawn across it.
The same applies to dark fur.
Rather than coloring the coat completely dark and drawing white lines over it, preserve lighter colors as you build.
A black cat beneath cool light might have blue-gray highlights.
Brown fur in sunlight may catch gold or ochre.
Red fur can glow with orange and cream.
Use brighter individual strands sparingly.
The highlight should follow the fur direction and the shape of the body.
A perfectly smooth outline can make a furry animal look cut out.
Around selected edges—particularly the chest, cheeks, ears, tail, and other fluffy areas—allow small tapered strokes to extend toward the boundary.
If you're working inside a printed coloring-book outline, you obviously can't erase the printed line. But you can still use lighter fur strokes along it to visually soften the edge.
Don't do this uniformly around the entire animal.
A few strategically fluffy areas are enough to suggest the texture.
Use three copies of a simple cat or other animal.
Make one short-haired.
Make one long-haired.
Make one fluffy or shaggy.
Keep the basic coat colors similar.
Change primarily:
stroke length,
stroke direction,
number of visible clumps,
softness of the edges,
and amount of fine detail.
This is an excellent reminder that texture isn't something you buy in a special pencil.
It's something your hand creates.
Color the direction of the fur before you color the individual hairs.
Build the animal first. Build the coat second. Add the prettiest little strands last.
And if you find yourself drawing hair number 6,482 somewhere on the left hind leg, you've probably gone too far.
Put the pencil down.
The cat is furry enough.