Get the lowdown on Fleas and effective treatment in this comprehensive article by Dogsey Member RoyV: You know how it is, your dog's scratching away and your wondering whether he's got fleas or perhaps the mozzies got him at night. Then, you start scratching yourself, and the characteristic pattern of three bites in a row (or possibly two if it was disturbed) appear on your skin. Yep, that's it, you've both got fleas! (and you now know how the dog feels because it itches like hell.)