Dogs Side Nails Curling. Dogs are such fun loving animals that they may in fact break or fracture a nail while playing at the park and not even flinch in the moment. 5.4 avoid chemicals that cause nail curling.

When you notice your dog's front paw curl over, you are witnessing knuckling. This way, they will look neat and clean as well. A vitamin deficiency (particularly in vitamins b and c, along with protein and calcium) can cause your nails to become unhealthy, weak, and brittle.