When you looked at my last example image, you might have found yourself thinking, that really doesn't look like fur, because no animal has that smooth a coat! You were right in your thinking. Animal fur has "breaks" in it. It breaks when the animal moves, and changes shape. It breaks because some of an animals fur might be longer than other fur, or it might have dirt, mud or other matter sticking it together. A medium haired coat looks a little bit like this example of fur.
How to draw long animal fur is coming next.