What causes weakness in a dog’s hind legs?

Weakness in a dog’s hind legs can be caused by various reasons. It can be an injury or trauma, arthritis, Cushing’s disease, degenerative myelopathy, muscle atrophy, pain or nerve damage or other less common cause. In fact, many of these causes are progressive. Therefore, you should seek help from a veterinarian as soon as possible to give your dog the best care.