Here’s a pattern I’ve had for dog’s ages and just never gotten around to posting. It can be tedious, but I love to do it.
Tips: Overlap each row of lines. Vary how much you overlap.
Vary the length, direction and curve of the strokes here and there.
This will look better if you DON’T make the lines precise.
I’ve added spots and stripes, but it looks cool without them too.