I was playing with Shami today and I noticed a tiny little spec sort of crawling amongst his black fur. I don't think it was a flea since it was smaller than a flea and it didn't have the characteristic rapid jumping movements that fleas have. Tried to pick it out, but lost track of it, was so tiny. I checked him all over for more, but couldn't find any. Mites? Just some bug that was in the wrong place at the wrong time? Anything to worry about?