pattern

Just noticed this weird zig-zag pattern on mock's back and can't figure it out. Seems to be on the tips of his hairs, not at the base. Has anyone ever seen something like this before? I haven't used any new sprays or anything. Just curious. Thanks! Suz and Mocko

I had to sell my blanket as my little one grew out of it over the summer. I don't want to invest in another one as she may outgrow that after only getting a couple of wears again. My friend is a seamstress and I'm looking for a nice professional looking pattern so I can talk her into making one...