Arthritis can be a painful and debilitating disease in humans if it's not treated effectively.
But imagine if you were unable even to tell anyone how you were suffering?
That's the reality for our pets. Dogs especially are prone to develop arthritis.
Now a vet from Sussex has launched a campaign to improve how it's diagnosed and managed.
Malcolm Shaw spoke to Hannah Capon of Canine Arthritis Management, dog owner Tim Mayer, and Gwen Covey-Crump, Veterinary Pain Specialist.
For free advice and information about recognising and treating the disease, go to www.caninearthritis.co.uk