The double row of teeth in dogs is caused by calcium deficiency and soft food in the diet. Therefore, the owner needs to replenish calcium for the dog in time and prepare some molar sticks and bones for the dog. It will take about 10-20 days. fade. If the dog's double row of teeth is strong, shows no signs of activity, and does not fall out for a long time, the dog needs to be taken to a pet hospital for treatment.