Have you noticed that your dog is limping? I once observed my pet favoring a paw over another. I did not know what to do so I took him to the vet, and I learned that it was because of a torn or broken nail. This type of injury is pretty common, and the good news is you can deal with it at home.
A dew claw injury is even more prevalent in dogs because unlike other nails; they do not weaken or wear down. Dogs do not use claws (or dewclaws) when they walk. It is the only nail found in the animal's ankle region or above the front of their feet.