Well I feel like I can add some more to this thread since most of what I do is animals with fur or feathers
Short furred animals require a bit different approach than longer haired ones since their fur lays close to the skin rather than having volume that makes it stick out. Short fur will be more parallel (though not perfectly so) and the strokes should be somewhat shorter.
notice how the hair on the forehead differes from the mane in texture, length of lines and randomness/crossing of hairs
The tail is coarse and crosses over itself but sort of clumps together too
Another even closer image of a horse requires attention to fur texture.
The skin around the eye is different than the longer fur on the face. Again notice the wee bit of forelock above appears coarser and more random. The folds of skin also have a slightly different feel.
The fur on the neck is slightly longer than on the face, but still needs to have a smooth feel to it rather than coarse or wooly. This is acheived with consistant fur length with only minor crossing of the furs. Lighter areas are achieved by doing more parallel lines rather than more crossing lines.