Cheez-it has some straggling fleas, he is on advantage and has been biting behind his legs the last 3 days. I checked him but it is really hard if not impossible with his puppy fur to see his skin. I found 3 little marks, that look sort of like healing pimples on his back leg, one has a little black head to it. It doesnt look like a living thing, but could it be a tick? I check him for fleas ever…