Degenerative myelopathy (DM) is a progressive, incurable spinal cord disease in dogs that requires active welfare management as the disease advances from paraparesis to quadriparesis.
Advanced DM presents a distinctive welfare profile: physical disability without pain, in an animal that retains full mental alertness and desire for engagement. Dogs in the paralysis phase who are well-managed — with mobility aids, clean dry bedding, regular turning, and continued social interaction — can have good quality of life for extended periods. The welfare threat is not the disease itself but secondary complications: pressure sores, urinary tract infections, muscle wasting, and loss of independence that causes frustration. Caregiver fatigue is also a welfare risk — owners who are overwhelmed cannot provide consistent care. Regular quality-of-life assessment helps identify when the balance has shifted toward humane euthanasia.