"K9 Carts" is the original patented wheelchair company for paralyzed pets developed and owned by a veterinary orthopedic surgeon. For over 45 years, K-9 Cart Company has custom-built mobility aids for handicapped dogs, cats, rabbits, ferrets, sheep, goats, etc. with disabilities ranging from disk disease, arthritis, birth defects, degenerative neurological diseases, and other orthopedic injuries.