Companion Animals

Degenerative Myelopathy in Dogs: 2025 Welfare Update

Updated welfare guide for canine degenerative myelopathy -- a progressive, incurable spinal cord disease.

Key Facts

Degenerative myelopathy (DM) is a progressive degenerative disease of the spinal cord affecting middle-aged to older dogs
German Shepherds, Pembroke Welsh Corgis, and Boxers are most commonly affected
A SOD1 gene mutation is associated with DM -- DNA testing identifies at-risk dogs
Clinical signs begin with hindlimb weakness and progress to paralysis over months to years
DM is not painful -- affected dogs remain alert and comfortable except for disability-related issues
Physiotherapy, hydrotherapy, and wheelchair mobility aids significantly extend quality of life
The welfare challenge is managing progressive loss of function while maintaining dog wellbeing
Euthanasia decisions should be guided by quality-of-life assessment rather than disability level alone

Welfare Significance

Degenerative myelopathy presents a welfare challenge distinct from most diseases -- it progresses relentlessly without causing pain, so quality of life depends on mobility management and environmental adaptation rather than pain control. Dogs with DM can have excellent welfare for extended periods if provided with physiotherapy, mobility aids, and appropriate home adaptations. The welfare goal is maintaining positive experiences for as long as possible.

What You Can Do

DNA test breeding dogs for the SOD1 mutation -- only breed from clear or carrier-clear pairings
Start physiotherapy and hydrotherapy at the first signs of hindlimb weakness
Invest in a mobility wheelchair when hindlimb function becomes too impaired for comfortable walking
Use validated quality-of-life tools to guide end-of-life decisions -- disability alone is not sufficient reason for euthanasia