Want to draw mammal ears? Here is a step-by-step approach to creating ears that look furry and suggest the texture of hairs in and around the ears. The trick is to focus on creating three areas of value: dark, middle and light. Then to suggest the texture of the hair with strokes from the dark areas into the light. The lines you draw are not individual hairs, but the spaces between clumps of hair.
Predator ears tend to be broad across the bottom and oriented forward. Hoofed animals have highly mobile ears that are broad near the top but narrow toward the head.
Wolves have patterned ears with long hairs inside.
Lions have short hair on the ear surface and a clump of long hair at the edge of the bowl of the ear.
Little ears, same principle, just smaller. Notice how this approach can be scaled down to make fast convincing little ears.
Hoofed Mammal Ears
Hoofed mammals have ears set on a little turret, allowing the ear to turn and listen in all directions.