Every dog owner has done it. You pick it up. You squint at it. You think, "Is that… normal?" And then you immediately wish you had never looked that closely in the first place. But here's the truth.

What’s Normal, What’s Not, and When to Worry Every dog owner has done it. You pick it up. You squint at it. You think, “Is that… normal?” And then you immediately wish you had never looked that ...