Excessively growing claws in a dog lead to deformation of the paw, impede movement, and can cause injury to the fingers or claw. Ideally, when the dog runs a lot on the asphalt and independently grinds claws. If this does not happen, especially in winter time, the tips of the claws should be trimmed with special nippers. It is important not to hurt the pulp. If, however, droplets of blood appear, it is necessary to treat the claw with green paint, hydrogen peroxide or iodine.