How old is your dog? What is breed of your dog. This problem is more common in old dogs and some breeds of dogs are more prone to have this condition. In old dogs, arthritis is also common and can cause weakness in the legs and dogs are reluctant to go for exercise an climb stairs. Signs of arthritis in dogs are
- Lack of interest in walk
- reluctant to climb stairs
- Lameness in one or more limbs
- Pain in joints
- Swelling in the joints
- Morning stiffness