If you visit Smithsonian's National Zoo in Washington D.C., you may notice Shanthi, an ele-phant in the zoo, walking around in stylish Teya boots. Shanthi has arthritis(关节炎), so the boots are to help ease her pain.
Shanthi has been at the zoo since she was 1 year old. She was first diagnosed(诊断) with the disease in her front feet ten years ago. Though zoo officials have tried everything, the disease has been difficult to treat.