Owners should not panic. They should check the pet’s limbs and trunk as soon as possible to see if there is any obvious trauma. If it hurts when touched or lightly pressed, send it to the pet hospital for examination. If there is no pain, it may be caused by the dog’s lack of calcium and vitamins. , at this time the owner needs to buy pet nutritional supplements for it; it is also possible that the dog has been playing for a long time and is tired and unable to support it. At this time, let the dog rest more and observe whether it gets better.