Dogs like to run around very much. If their nails are too long, they will slip on the floor or hang on the carpet. The growth rate of nails is inversely proportional to the amount of exercise. The dog that often moves outside, fingernail suffers ground attrition, grow naturally slow. On the contrary, dogs who always play indoors and exercise less often grow their nails faster.
Of course, don’t think your dog is always running outside without cutting his nails. The dog’s wolf claws don’t touch the ground because of movement, so you still need to trim them. There are also blood vessels in the dog’s nails, which grow with the nails. When cutting, pay attention not to cut the blood vessels.