The sudden lameness of one of the dog's hind legs may be caused by muscle injury, tendon injury, hip dysplasia, long-term calcium deficiency, joint strain and aging, nerve damage, etc. It is best to take the dog to the pet hospital for examination. Next, confirm the cause and treat it promptly to avoid delaying the condition and affecting the normal development of the dog.
Tips:

Pay attention to supplementing calcium for dogs, especially during puppyhood and old age. At the same time, do not let dogs exercise strenuously to avoid joint damage. damage.