Degenerative joint disease is the number one cause of pain in our pets. 20% of all pets of any age have arthritis. This figure climbs to 90% for the over-tens, afflicting both dogs and cats, particularly large breed dogs. The condition is the result of long-term stresses, from an old injury or from a poorly conformed joint during the growth stages of a puppy or kitten.  A pet doesn’t have to be a senior citizen to benefit greatly from joint care supplements or anti-inflammatories.